Frozen pendants (7)
I believe the answer is:
icicles
'frozen pendants' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for icicles that I've seen before include "Frozen drips" , "Pendent spears of frozen water (7)" , "Hanging spikes of frozen water" , "'When ... hang by the wall / And Dick the shepherd blows his nail' (Shakespeare)" , "They hang by the wall (L.L.Lost)" .)