Husband breaking leg used to get delayed (2,4)
I believe the answer is:
on hold
'delayed' is the definition.
(I've seen this before)
'husband breaking leg used' is the wordplay.
'husband' becomes 'h'.
'breaking' means one lot of letters goes inside another.
'leg' becomes 'on' (cricket term, fielding positions).
'used' becomes 'old' ('old' can be similar in meaning to 'used').
'on'+'old'='onold'
'h' put inside 'onold' is 'ON HOLD'.
'to get' acts as a link.
(Other definitions for on hold that I've seen before include "Left pending" , "In abeyance" , "not through yet?" , "Awaiting response - from phone operator?" , "waiting for reply" .)