(Irregular preterit, past participle: bred).
1. To copulate with a female, used esp. of horses; SYN. cover.
2. To have young; used of animals; derogatory when used for people; SYN. multiply.
3. Said of plants or animals: to cause to have young, usually with attention to the genetic strains.

1. To combine by multiplication
2. To combine or increase by multiplication; SYN. manifold.