Cold sweet pleasant, having omitted starter (3)
I believe the answer is:
'cold sweet' is the definition.
'pleasant having omitted starter' is the wordplay.
'pleasant' becomes 'nice' (similar in meaning).
'having omitted starter' means to remove the first letter.
'nice' with its first letter taken away is 'ICE'.
(Other definitions for ice that I've seen before include "Frozen liquid" , "Reserve" , "Precious stones" , "Slippery surface" , "Cold demeanour" .)