Pronunciation: (&thslash;em; unstressed &thslash;um, um), [key]
1. the objective case of they, used as a direct or indirect object: We saw them yesterday. I gave them the books.
2. Informal.(used instead of the pronoun they in the predicate after the verb to be): It's them, across the street. It isn't them.
3. Informal.(used instead of the pronoun their before a gerund): The boys' parents objected to them hiking without adult supervision.
Nonstandard.those: He don't want them books.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.