Cry when putting up with a cold (3)
I believe the answer is:
caw
'cry' is the definition.
(caw is a kind of cry)
'putting up with a cold' is the wordplay.
'putting up' says the letters should be written in reverse.
'with' becomes 'w' (short for with).
'cold' becomes 'C' (eg on taps).
'w'+'a'+'c'='wac'
'wac' reversed gives 'CAW'.
'when' acts as a link.
(Other definitions for caw that I've seen before include "Crow's call" , "Sound made by a crow, say" , "Rook's call" , "Cry of a rook" , "Crow's cry" .)