<p><strong>Noun</strong></p><ul><li>a person who spends some time at another person's home in some social activity, as a visit, dinner, or party.</li><li>a person who receives the hospitality of a club, a city, or the like.</li><li>a person who patronizes a hotel, restaurant, etc., for the lodging, food, or entertainment it provides.</li><li>an often well-known person invited to participate or perform in a regular program, series, etc., as a substitute for a regular member or as a special attraction.</li><li>Zoology: an inquiline.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to entertain as a guest.</li><li>(used without object) to be a guest; make an appearance as a guest: She's been guesting on all the TV talk shows.</li></ul><p><strong>Adjective</strong></p><ul><li>provided for or done by a guest: a guest towel; a guest column for a newspaper.</li><li>participating or performing as a guest: a guest conductor.</li></ul>