Of persons. transitive. Scottish in later use. To mix, blend (people). Also with with, together. Usually in passive. Now rare.

To breed across the lines which separate varieties or races; to breed (animals or plants) from individuals of different species or breeds.

transitive. To cross in breeding, subject to cross-breeding. Also intransitive. rare.

transitive. To cause (different breeds or groups) to reproduce together; to modify (a breed) by interbreeding; to cross-fertilize (plants).

transitive. To subject (species or varieties of plants or animals) to cross-breeding; to cause to interbreed and thus to produce hybrids.

transitive. To make mongrel in breed, type, composition, character, etc. Also in extended use.

transitive. To produce (offspring) from individuals of different species, breeds, or ethnic groups. Also figurative.

transitive. To breed more quickly or more prolifically than.

(transitive) to cross (a hybrid) with one of its parents.

transitive. To breed (an animal or plant) to an unrelated individual.