Part of the Arctic you find very cold (3)
I believe the answer is:
icy
'very cold' is the definition.
(I've seen this in another clue)
'part of the arctic you find' is the wordplay.
'part of' indicates the answer is hidden within the clue.
'ICY' can be found hidden inside 'arctic you find'.
(Other definitions for icy that I've seen before include "Frosty and slippy" , "Frosty, arctic" , "Freezing and slippy" , "Very cold, unfriendly" , "Very cold, hostile" .)