Tams' kin (6)
I believe the answer is:
berets
'tams' kin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for berets that I've seen before include "Round flat caps" , "Caps, hats" , "Soft flat caps" , "headgear" , "Round flattish caps" .)