Large milk can (5)
I believe the answer is:
churn
'large milk can' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for churn that I've seen before include "Machine in which milk is beaten to make butter" , "Large milk vessel" , "Kind of barrel in which butter in made" , "Agitate - milk container" , "Kind of cask butter is made in" .)