Winter Olympian's weapon (5)
I believe the answer is:
luger
I believe this clue is a double definition.
'winter olympian's' is the first definition.
(I've seen this in another clue)
'weapon' is the second definition.
(I've seen this before)
(Other definitions for luger that I've seen before include "German semi-automatic pistol" , "competes in winter Olympics?" , "Make of pistol" , "Type of (German) automatic pistol" , "Weapon" .)