Guy necessarily cool at Xmas? (7)
I believe the answer is:
snowman
'guy necessarily cool at xmas?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'guy' is the wordplay.
I cannot quite understand how this works, but
'guy' could be 'man' (guy can informally mean a man) and 'man' is found in the answer.
The remaining letters 'snow' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for snowman that I've seen before include "The thaw will kill him" , "Seasonal figure" , "Impermanent figure" , "Cold character" , "Male figure of ice crystals" .)