breeder

(noun): A person who breeds plants or animals (professionally).
(noun): A person who has had or who is capable of having children; a person who is focussed on the rearing of their own children.
(noun): A heterosexual; i.e. one whose sexual intercourse can lead to breeding.
(noun): Ellipsis of breeder reactor; a type of nuclear reactor that creates material suitable for the production of atomic weapons.
(noun): A pattern that exhibits quadratic growth by generating multiple copies of a secondary pattern, each of which then generates multiple copies of a tertiary pattern.