Shipwrecked and icy cold (2,3,5)
I believe the answer is:
on the rocks
'shipwrecked' is the definition.
(thesaurus)
'and icy cold' is the wordplay.
I cannot quite see how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is found within the answer.
'cold' could be 'c' (eg on taps) and 'c' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for on the rocks that I've seen before include "Having problems" , "Ruined" , "Served neat with ice" , "In trouble - with ice cubes" , "Drinks may be" .)