Some milk dispensers (6)
I believe the answer is:
udders
'some milk dispensers' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for udders that I've seen before include "Containers for milk, naturally!" , "Bovine mammary glands" , "Milk producers" , "Mammary glands of cows" , "Cows' teats" .)