When milk coagulates, it separates into two parts--the curds and the whey The curd is the semisolid formed by this separation Cheese is made from the curd The whey is the watery liquid
To become coagulated or thickened; to separate into curds and whey coagulated milk; used to made cheese; "Little Miss Muffet sat on a tuffet eating some curds and whey"
The thick white substance which is formed when milk turns sour can be referred to as curds. curds the thick substance that forms in milk when it becomes sour whey bean curd (crud (14-20 centuries), perhaps from a language)