skull and crossbones
idiomPart ofskull
skull and crossbones — idiom
1. a picture of a human skull above two crossed bones, used as a symbol for poison,
1.idiom
Definition
a picture of a human skull above two crossed bones, used as a symbol for poison, danger, or pirates
Example
The cleaning bottle had a skull and crossbones on the label, so I knew it was poisonous.
The old pirate flag was black with a white skull and crossbones stitched onto it.