paging (Noun) — Calling out the name of a person (especially by a loudspeaker system). ex. "the public address system in the hospital was used for paging"
paging (Noun) — The system of numbering pages.
paging (Verb) — Contact, as with a pager or by calling somebody's name over a P.A. system.
paging (Verb) — Work as a page. ex. "He is paging in Congress this summer"
paging (Verb) — Number the pages of a book or manuscript.