To give birth to a calf
To assist in a cow's giving birth to a calf
To give birth to (a calf)
(especially of an ice shelf, a glacier, an ice sheet, or even an iceberg) to shed a large piece, e.g. an iceberg or a smaller block of ice (coming off an iceberg)
The glacier was starting to calve even as we watched.
(especially of an iceberg) to break off
The sea was dangerous because of icebergs calving off the nearby glacier.
(especially of an ice shelf, a glacier, an ice sheet, or even an iceberg) to shed (a large piece, e.g. an iceberg); to set loose (a mass of ice), e.g. a block of ice (coming off an iceberg)
The glacier was starting to calve an iceberg even as we watched.
The act of giving birth to a calf
The breaking away of a mass of ice from an iceberg, glacier etc.