breeder (n.)youdaoicibaDictYouDict[breeder 词源字典]
1570s, "one who produces or originates," agent noun from breed (v.). Meaning "one who breeds cattle" or some other animal is recorded from 1530s. Of nuclear reactors, from 1948. As a scornful homosexual term for "heterosexual person," attested from 1986.[breeder etymology, breeder origin, 英语词源]