A drop of ice (6)

I believe the answer is:

icicle

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'ice' is the definition.
(I know that icicle is a type of ice)

I can't explain the remainder of the clue.

(Other definitions for icicle that I've seen before include "Winter spike" , "Frozen water drip" , "Cold hanger" , "Hanging ice; stalactite" , "Hanging drop of cold water" .)

I've seen this clue in The Globe and Mail and The Guardian.

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