- The definition of a heifer is a young female cow that hasn't given birth to a calf.
A nine month old female cow with no offspring is an example of a heifer.
A young black and white heifer.
heifer definition by Webster's New World
Origin: Middle English haifre ; from Old English heahfore, literally , full-grown young ox ; from heah, high, hence full-grown (see high) plush fearr, bull, literally , young animal: see farrow
heifer definition by American Heritage Dictionary
Origin: Middle English, from Old English hēahfore; see perə-1 in Indo-European roots.