freemartin
/ˈfriːmɑːrtɪn/
noun
- A female calf that is born as a twin with a male calf and is typically infertile due to exposure to male hormones in the womb.
- Freemartins are often used as beef cattle since they cannot reproduce.
- The farmer identified the heifer as a freemartin because she had a twin brother.
- Veterinarians can test a calf to determine if it is a freemartin.