Style of sleeve (6)
I believe the answer is:
raglan
'style of sleeve' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for raglan that I've seen before include "coat with unique sleeves" , "Type of sleeve or overcoat" , "Crimean commander; type of coat" , "A lord, a type of sleeve and a Dublin road made famous by Patrick Kavanagh" , "Garment defined by its sleeves" .)