breeder

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A person who breeds animals or plants.
2. n. An animal kept to produce offspring.
3. n. Offensive Slang A heterosexual person.
4. n. A source or cause: social injustice—a breeder of revolutions.
5. n. A breeder reactor.

Century Dictionary and Cyclopedia

1. n. One who or that which breeds, procreates, or produces young: used especially of the female.
2. n. One who educates or rears; figuratively, that which rears.
3. n. One who or that which produces, causes, or brings about: as, he was a breeder of dissensions.
4. n. One who procures the birth of young; one who raises a particular breed, as of animals; technically, in herd-and stud-books, the owner of the dam at the time of the birth of the animal recorded.
5. n. Same as bred-sore.

Wiktionary

1. n. A person who breeds plants or animals professionally.
2. n. gay slang, derogatory A heterosexual; i.e. one whose sexual intercourse can lead to breeding.
3. n. A type of nuclear reactor that creates material suitable for the production of atomic weapons. (See Wikipedia's article on fast breeder reactors.)
4. n. slang, derogatory a person who has had or who is capable of having children; a person who is focussed on the rearing of their own children.
5. n. cellular automata 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.

GNU Webster's 1913

1. n. One who, or that which, breeds, produces, brings up, etc.
2. n. A cause.

WordNet 3.0

1. n. a person who breeds animals