thread

thread — noun

1. a very thin strand of cotton, wool, nylon, or other material, used for sewing, w

1.nounA2
Definition

a very thin strand of cotton, wool, nylon, or other material, used for sewing, weaving, or making cloth.

Example

Putri chose a blue thread to stitch the torn pocket on her jeans.

colour + thread for mending clothes

The tailor ran out of black thread halfway through mending the jacket.

Common collocations
  • spool of thread
  • cotton thread
  • silk thread
  • needle and thread
  • length of thread
Synonyms
  • string

    thicker and usually stronger than thread; used for tying rather than sewing

  • yarn

    thicker, often woollen thread used for knitting or weaving

  • strand

    a single thin piece of thread, hair, or wire; more technical sounding

  • filament

    a very fine, single fibre; used in scientific or technical contexts

Grammar Patterns

[countable/uncountable] a length of thread

2. a very narrow and elongated visible band — such as a beam of sunlight, a wisp of

2.nounB1
Definition

a very narrow and elongated visible band — such as a beam of sunlight, a wisp of smoke, or a trickle of liquid — that you can see stretching through the air or across a surface.

Example

A thin thread of smoke rose from the chimney above the empty house.

thread of [substance] for a thin stream

Selim watched the golden thread of light creep across the floor as the sun set.

Common collocations
  • thread of light
  • thread of smoke
  • golden thread
  • thin thread
Synonyms
  • streak

    a long, thin line that stands out against a background; less delicate than 'thread'

  • stream

    a continuous flow of liquid or light; suggests movement

  • wisp

    a thin, faint, and slightly curling line, especially of smoke or cloud

Grammar Patterns

a thread of [substance]

3. the connected series of thoughts, ideas, or events that gives a story, speech, o

3.nounB2
Definition

the connected series of thoughts, ideas, or events that gives a story, speech, or conversation its overall meaning and direction.

Example

Obi lost the thread of the lecture after his phone buzzed loudly.

lose the thread of [speech/conversation]

A single question about justice ran like a thread through all his novels.

Common collocations
  • lose the thread
  • pick up the thread
  • common thread
  • running thread
Synonyms
  • train of thought

    more specific to thinking; suggests a mental sequence that can be interrupted

  • storyline

    used specifically for plots of books, films, or plays

  • gist

    the general meaning or main point; less about sequence and more about overall idea

Grammar Patterns

the thread of [something]

Usage Note

Often used in the fixed phrase 'lose the thread' meaning to stop being able to follow a sequence of ideas. Also common in 'pick up the thread' meaning to resume after an interruption.

4. a group of linked posts, emails, or text messages that all follow the same subje

4.nounB1
Definition

a group of linked posts, emails, or text messages that all follow the same subject and appear one after another on a website, forum, or messaging platform.

Example

Niran posted a question in the forum thread about fixing bicycle gears.

forum thread for online discussion

The thread had over two hundred replies by lunchtime.

Common collocations
  • forum thread
  • comment thread
  • start a thread
  • reply to a thread
Synonyms
  • discussion

    general term; 'thread' specifically refers to the linear, connected format on a platform

  • conversation stream

    more common in instant-messaging apps; implies a live, ongoing exchange

Grammar Patterns

[forum / comment / message] thread

Usage Note

Common on social media platforms, forums, and email clients. The verb form 'to thread' (verb/6) describes the action of organizing messages this way.

5. a helical ridge circling a cylindrical fastener, or cut into the inner surface o

5.nounB2
Definition

a helical ridge circling a cylindrical fastener, or cut into the inner surface of a matching ring, that allows the two pieces to be screwed together tightly.

Example

The thread of the screw was worn down, so it would not stay in place.

Amani checked that the nut's thread matched the bolt before tightening them.

matched thread for compatibility

Common collocations
  • screw thread
  • thread pitch
  • strip a thread
  • match the thread
  • internal thread
Synonyms
  • helix

    the mathematical shape of a thread; technical and rarely used in everyday language

  • groove

    the channel between the raised ridges; not the same as the thread itself

Grammar Patterns

[screw / bolt / nut] thread

Usage Note

Frequently appears in technical contexts such as DIY, mechanics, and engineering. The verb 'to thread' can also mean to cut a thread into a surface (e.g. 'thread a pipe').

6. items of clothing, especially when considered as a complete outfit.

6.nounB2
Definition

items of clothing, especially when considered as a complete outfit.

Example

Tariro showed up at the party wearing his finest threads.

informal plural: threads = clothes

Heloísa packed her best threads for the holiday weekend.

Common collocations
  • best threads
  • nice threads
  • wear threads
Synonyms
  • clothes

    neutral and formal; 'threads' is exclusively informal slang

  • outfit

    refers to a coordinated set of clothes, not just any clothes

Grammar Patterns

[possessive] + threads

Usage Note

Always used in the plural form 'threads'. Strongly informal — common in casual speech and pop culture, but not appropriate in formal writing. Originates from African American Vernacular English and later adopted into mainstream slang.

Idioms

A situation is extremely uncertain and could fail at any moment.

The company's survival hangs by a thread after losing its main client.

With only one engine working, the plane's safety hung by a hair.

To start again from where you stopped, especially after a break or change.

After her year abroad, Maya picked up the threads of her old job.

Can you pick up the threads of the conversation we had yesterday?

thread — verb

Word family

  • threader
    nounC1
  • threading
    nounB2
  • unthread
    verbC1
  • threadlike
    adjectiveC1

Synonym discussion

Sense: noun/1

All four words describe thin, flexible lengths of material, but they differ in thickness, use, and context. 'Thread' (noun/1) is the finest — used primarily for sewing and weaving, made by twisting short fibres together. 'String' is thicker and stronger, used for tying, pulling, or hanging objects, such as a string on a parcel or a guitar string. 'Yarn' is thicker still and woolly; it is used for knitting and crocheting rather than sewing. 'Strand' is more general — a single piece of any thin material, such as a strand of hair, wire, or thread itself — and is used in technical or descriptive contexts. 'Filament' is the thinnest of all — a single, un-twisted fibre, common in scientific language (a lightbulb filament) or textile manufacturing. In everyday speech, choose 'thread' for sewing, 'string' for tying, 'yarn' for knitting, and 'strand' or 'filament' when referring to a single component of something larger.

Common collocations

Nouns

Adverbs

Phrases

Etymology

Proto-Indo-EuropeanProto-GermanicOld EnglishMiddle EnglishEnglish

The word 'thread' comes from Old English 'þræd', meaning 'twisted yarn'. It is related to the Old English verb 'þrāwan' ('to twist'), which is also the source of the modern English verb 'throw' (whose original meaning was 'to twist or turn'). The connection between twisting and thread-making reflects how thread was historically made by twisting fibres together. The word can be traced further back to Proto-Germanic '*þrēdu-' and ultimately to the Proto-Indo-European root '*ter-', meaning 'to rub, turn, or twist'.