freemartin.
A female calf, born as twin with a bull calf, but sexually imperfect (often infertile).
Meaning & usage
A female calf, born as twin with a bull calf, but sexually imperfect (often infertile).
Any female animal born sterile or otherwise infertile.
"Has your cat been spayed?" "I didn't need to: she's a freemartin."
Where this word comes from
Late 17th century. Etymology unknown.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.