Work after meal with a drink husband sent in (4,2)
I believe the answer is:
wash up
'work after meal' is the definition.
(washing up plates etc after a meal)
'with a drink husband sent in' is the wordplay.
'with' becomes 'w' (abbreviation).
'drink' becomes 'sup' (to sup is to drink).
'husband' becomes 'h'.
'sent in' means one lot of letters goes inside another.
'sup' enclosing 'h' is 'shup'.
'w'+'a'+'shup'='WASH-UP'
(Other definitions for wash up that I've seen before include "do housework" , "Perform domestic chore" , "debriefing" , "'Clean the dishes (4,2)'" , "Sweep onto shore" .)