an animal, plant, or person that produces offspring or reproduces.

a person who raises animals or plants primarily for breeding purposes.

Also called breed·er re·ac·tor [bree, -der ree-ak-ter]. Energy. a nuclear reactor in which more fissile material is produced than is consumed.

Slang: Sometimes Offensive. a term used by gay people to refer to a heterosexual person.

Slang: Sometimes Offensive. a term used especially by child-free people to refer to a biological parent.