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.
... children under the age of 18 living with them, 60.7% are married couples living together, 8.8% have a female householder with no husband present, and 28.1% ar ...