Milk dispenser (5)
I believe the answer is:
udder
'milk dispenser' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for udder that I've seen before include "Mammary gland of cows, sheep etc" , "Steer with this" , "Bovine mammary gland" , "Cow's milk source" , "Cow's milk "bag"" .)