Calves are young cattle. A calf is a child of a cow and a bull. The plural is calves. Calf meat is called veal. Fine calf skin used for pages in early codexes is called pergamon.
... See Professor Edward Felton's freedom-to-tinker Web site (www.freedom-to-tinker.com) for some observations on the DCMA, its proposed successors, and their consequences, ...