verb.
Simple past tense and past participle of interbreed.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
bred of closely related parents
Word Usage
"For a species that's not being deliberately interbred, has a small number of offspring, and reproduces starting at c. age 15 instead of c. age 2, 6000 years is trivial time."