Thin pancake (5)
I believe the answer is:
crepe
'thin pancake' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for crepe that I've seen before include "Light wrinkled fabric" , "Pancake - type of paper" , "Crinkly material" , "Fabric with a wrinkled surface" , "Flat French food" .)