Bony with a collapsed lung and a touch of rheumatism (7)
I believe the answer is:
angular
'bony' is the definition.
(thesaurus)
'a collapsed lung and a touch of rheumatism' is the wordplay.
'collapsed' is an anagram indicator.
'and' is a charade indicator (letters next to each other).
'touch of' indicates taking the first letters.
The first letter of 'rheumatism' is 'r'.
'lung' anagrammed gives 'ngul'.
'a'+'ngul'+'a'+'r'='ANGULAR'
'with' is the link.
(Other definitions for angular that I've seen before include "With prominent bone structure" , "Bony, awkward" , "Having sharp edges or corners" , "Bony - lean - gaunt" , "Having sharp corners, lacking curves or smoothness" .)