Fish, pal fancy put on ice (6)
I believe the answer is:
plaice
'fish' is the definition.
(I know that plaice is a type of fish)
'pal fancy put on ice' is the wordplay.
'fancy' indicates an anagram.
'put on ice' becomes 'ice' (synonyms).
'pal' with letters rearranged gives 'pla'.
'pla'+'ice'='PLAICE'
(Other definitions for plaice that I've seen before include "Tasty flatfish I place here" , "Important food fish" , "Brown flatfish" , "Position the fish, we hear" , "A fish; sounds like put" .)