in calf Definition

calf¹
noun calves

1. The young of any bovine animal, especially domestic cattle.
2. The young of certain other mammals, such as the elephant and whale.
3. A large mass of ice that has broken off a glacier or an iceberg.
4. calfskin.

Idiom: in calf

Usually said of a cow: pregnant with a calf.

Etymology: Anglo-Saxon cælf.