Figurative expression (5)
I believe the answer is:
idiom
'figurative expression' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for idiom that I've seen before include "Language used by people or group, vernacular" , "Distinctive expression" , "Word usage peculiar to a specific group" , "Form of linguistic expression" , "Characteristic mode of expression" .)