The action or activity of breeding an animal, plant, or slave in one's home or home country. Also: inbreeding.

Breeding from animals of the same parentage or closely related; breeding in-and-in.

(a) homogamous condition; fertilization of a flower by its own pollen or by that of another flower on the same plant (cf. b above); (b) Evolution…

loosely. Marriage between persons (or interbreeding between animals) nearly related; consanguineous marriage or breeding.