Family disposing of large container (3)
I believe the answer is:
can
'container' is the definition.
(can is a kind of container)
'family disposing of large' is the wordplay.
'family' becomes 'clan' (clan can mean a large family).
'disposing of' indicates named letters should be taken away.
'large' becomes 'L' (eg in clothes sizes).
'clan' with 'l' taken away is 'CAN'.
(Other definitions for can that I've seen before include "Billy" , "Cooler" , "let go in the US" , "toilet" , "Tin; be able to" .)