Someone who visits someone else; someone staying as a guest. / Someone who pays a visit to a specific place or event; a sightseer or tourist.

plural of visitor

(regional) The visiting team; the sports team that is not playing in the usual area that they play in, as opposed to the home team.

(informal) An extraterrestrial person who visits from a different star system.

plural of visitor team

plural of visitor pattern

(software, design) A behavioural design pattern that separates an algorithm from an object structure on which it operates.

Alternative form of visitors' book

A book in which visitors or guests (at, for example, a bed and breakfast) may leave comments about the establishment.

(euphemistic slang) The menstrual period.