Hangers-on in cold weather (7)
I believe the answer is:
icicles
'hangers-on in cold weather' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how one could define the other.
This is all the clue.
Can you help me to learn more?
(Other definitions for icicles that I've seen before include "Frozen pendants" , "'When ... hang by the wall / And Dick the shepherd blows his nail' (Shakespeare)" , "Hanging spikes of frozen water" , "They hang by the wall (L.L.Lost)" , "Frozen drips" .)