The cold I had after breaking a leg (5)
I believe the answer is:
gelid
'the cold' is the definition.
(I've seen this before)
'i had after breaking a leg' is the wordplay.
'i had' becomes 'i'd' (I'd).
'after' is a charade indicator (letters next to each other).
'breaking' indicates an anagram.
'leg' is an anagram of 'gel'.
'id' after 'gel' is 'GELID'.
(Other definitions for gelid that I've seen before include "Icy cold - glide (anag)" , "Extremely cold, frozen" , "Glacial" .)