milkbag

From milk +‎ bag.

milkbag (plural milkbags)

1. An udder.

   Synonym: bag

2. A manmade bag containing milk.

   Coordinate terms: milk bottle, milk jug, carton, milk can, milk churn

3. (slang, vulgar, usually in the plural) The human female breast.

   Synonyms: bag, funbag, milk jug; see also Thesaurus:breasts