1 [I] (used about a cow) to give birth to a CALF(= a young cow) （指母牛）生小牛，产犊

2 [I,T] (technical术语) (used about a large piece of ice) to break away from an ICEBERG(= a very large block of ice that floats in the sea) or a GLACIER(= a mass of ice that moves slowly down a valley); to lose a piece of ice in this way （指一大块冰）（从冰山或冰川）崩裂；（冰块因崩裂而）分离 ☞picture at glacial 见 glacial 插图