breeder
Concise Oxford English Dictionary © 2008 Oxford University Press:
breeder/ˈbriːdə(r)/
▶noun
- 1 a person or animal that breeds.
- 2 derogatory (in gay slang) a heterosexual person.
- 3 a nuclear reactor which creates another fissile material (plutonium-239) as a by-product of energy production by fission of uranium-238.
'breeder' also found in these Oxford entries:

