Oh, hang - the chap has a broken leg! (6)
I believe the answer is:
dangle
'oh hang' is the definition.
I can't tell whether this defines the answer.
'chap has a broken leg' is the wordplay.
'chap' becomes 'dan' ().
'has' means one lot of letters go next to another.
'a broken' is an anagram indicator.
'leg' with letters rearranged gives 'gle'.
'dan'+'gle'='DANGLE'
'the' is the link.
Can you help me to learn more?
(Other definitions for dangle that I've seen before include "Hang so as to swing freely" , "Suspend in front of Glenda" , "Temptingly offer" , "Hang -- Glenda (anag)" , "Hang loosely or swing" .)