cave man
idiomPart ofcave
cave man — idiom
1. an ancient human who lived in caves; also used informally to describe a man with
1.idiom
Definition
an ancient human who lived in caves; also used informally to describe a man with very old-fashioned or rough manners
Example
The museum exhibition shows how cave men made tools from stone.
My uncle is a bit of a cave man when it comes to using a smartphone.