Piece of ice destined to give way (4)
I believe the answer is:
cede
'give way' is the definition.
(thesaurus)
'piece of ice destined to' is the wordplay.
'piece of' indicates a hidden word.
'CEDE' is hidden within 'ice destined to'.
(Other definitions for cede that I've seen before include "Allow" , "Transfer" , "Deliver" , "Give up one's rights" , "Surrender or relinquish possession" .)