calving
verb
Definitions
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)
Example: The glacier was starting to calve even as we watched.
noun
Definitions
The act of giving birth to a calf
The breaking away of a mass of ice from an iceberg, glacier etc.