freemartins
/ˈfriːmɑːrtɪnz/
noun
- Plural of freemartin; female calves born as twins with male calves, typically infertile.
- The ranch had several freemartins in the herd this year.
- The farmer sold the freemartins for meat because they could not breed.
- Freemartins are common in cattle when twins of opposite sex are born.