One who is a recipient of hospitality at the home or table of another. One to whom entertainment or hospitality has been extended by another in the role of host or hostess, as at a party. One who pays for meals or accommodations at a restaurant, hotel, or other establishment; a patron. A distinguished visitor to whom the hospitality of an institution, city, or government is extended. A visiting performer, speaker, or contestant, as on a radio or television program. Zoology A commensal organism, especially an insect that lives in the nest or burrow of another species. To entertain as a guest. To appear as a guest: guested on a television series. Provided for guests: guest rooms. Participating as a guest: a guest conductor.