in•ter•breedPronunciation: (in"tur-brēd'), [key]
—v., -bred, -breed•ing.
to crossbreed (a plant or animal).
to cause to breed together.
to breed or mate with a closely related individual, as in a small, closed population.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.