1 definition by Barry B.A. , North America

A white and liquid substance, ususally spoiled if left unrefrigerated.
Brother 1: Hey, yore pouring orange jus in yer cereal ! Go get the melk, man!

Brother 2: No... its bad and it smells funny .
by Barry B.A. , North America January 8, 2010
Get the melk mug.