Drainage basin: The area drained by a river and its tributaries. A drainage basin is considered to be an open system because water can be added or lost from a drainage basin.
Noun. 1. milk whey-the serum or watery part of milk that is separated from the curd in making cheese. whey. blood serum, serum-an amber, watery fluid, rich in proteins, that separates out when blood coagulates. 1  Facebook. 2  Twitter.
Whey contains milk protein. Also, casein is milk protein, so people with milk-allergy cannot eat casein either. Lactose is milk sugar, and many people have trouble drinking milk because they don't digest lactose well (that is called lactose-intolerance, and is by itself not an allergy). ...Read more.