From Longman Dictionary of Contemporary Englishcalvecalve /kɑːv $ kæv/ verb [intransitive] HBAto give birth to a calf→ See Verb table
Examples from the Corpus
calve• All was well at first, but when she calved it was another story.• So why was he fired for putting a chart of caribou calving areas on the internet?• It is an early-maturing breed, capable of calving at two years old.• His wife had invariably been to lambing and, sometimes, calving courses.• An estimated one-third of whale calves die in their first year.• They are surprisingly early maturing: like the Jersey, they have been known to calve even younger than two years old.• Another day, George rounded up some yearling calves for sale.• Nobody knew more about lambing and calving than a veterinary surgeon so he was invited to instruct.Origin calve Old English cealfian, from cealf; → CALF2 