Crippled due to a terrible meal (4)
I believe the answer is:
lame
'crippled' is the definition.
(I know that crippled can be written as lame)
'a terrible meal' is the wordplay.
'a terrible' is an anagram indicator.
'meal' is an anagram of 'LAME'.
'due to' is the link.
(Other definitions for lame that I've seen before include "Unable to walk normally" , "Disabled in the feet or legs" , "Rubbish" , "Flimsy, as an excuse" , "Hobbling" .)