neuter (
http://definr.com/neuter)
adj 1: of grammatical gender; "`it' is the third-person singular
neuter pronoun" [ant:
masculine,
feminine]
2: having no or imperfectly developed or nonfunctional sex
organs [syn:
sexless]
n : a gender that refers chiefly (but not exclusively) to
inanimate objects (neither masculine nor feminine)
v : castrate, used with animals; "Is your dog neutered?" [syn:
alter,
spay]