in grammar, denoting or belonging to the gender of nouns that is neither masculine nor feminine

said of an animal:

said of a flower or plant: without pistils or stamens

in grammar, a neuter noun or other neuter form

an infertile insect in a group of social insects, esp a worker bee or ant

a spayed or castrated animal

to spay or castrate (a domestic animal)

to render (something) feeble or ineffective, or emasculate it