13. (v.t.)neuter to spay or castrate (a dog, cat, etc.).
Etymology: (1350–1400; ME neutre < MF < L neuter neither (of two))
Definition of 'Neuter'
Princeton's WordNet
1. (adj)neuter a gender that refers chiefly (but not exclusively) to inanimate objects (neither masculine nor feminine)
2. (adj)neuter of grammatical gender "`it' is the third-person singular neuter pronoun"
3. (verb)neuter, sexless having no or imperfectly developed or nonfunctional sex organs
4. (verb)alter, neuter, spay, castrate remove the ovaries of "Is your cat spayed?"
Definition of 'Neuter'
Webster Dictionary
1. (adj)Neuter neither the one thing nor the other; on neither side; impartial; neutral
2. (adj)Neuter having a formbelongingmore especially to words which are not appellations of males or females; expressing or designating that which is of neither sex; as, a neuter noun; a neuter termination; the neutergender
8. (noun)Neuter an organism, either vegetable or animal, which at its maturity has no generative organs, or but imperfectly developed ones, as a plant without stamens or pistils, as the garden Hydrangea; esp., one of the imperfectly developed females of certain social insects, as of the ant and the common honeybee, which perform the labors of the community, and are called workers