guest

from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

• noun A dialectal variant of ghost. Brockett. Compare larguest.
• To entertain as a guest; receive with hospitality.
• To act the part of a guest; be a guest.
• noun A stranger; a foreigner.
• noun A person received into one's house or at one's table out of friendship or courtesy; a person entertained gratuitously; a visitor sojourning in the house of, or entertained at table by, another.
• noun A person entertained for pay, as at an inn or in a boarding-house; a boarder or lodger.
• noun In zoology, a parasite: as, “a dozen tapeworm guests,” Cobbold.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb obsolete To receive or entertain hospitably.
• noun A visitor; a person received and entertained in one's house or at one's table; a visitor entertained without pay.
• noun A lodger or a boarder at a hotel, lodging house, or boarding house.
• noun Any insect that lives in the nest of another without compulsion and usually not as a parasite.
• noun An inquiline.
• intransitive verb obsolete To be, or act the part of, a guest.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a recipient of hospitality, specifically someone staying by invitation at the house of another
• noun a patron or customer in a hotel etc.
• noun an invited visitor or performer to an institution or to a broadcast
• verb intransitive to appear as a guest, especially on a broadcast
• verb intransitive as a musician, to play as a guest, providing an instrument that a band/orchestra does not normally have in its line up (for instance, percussion in a string band)

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun United States journalist (born in England) noted for his syndicated homey verse (1881-1959)
• noun (computer science) any computer that is hooked up to a computer network
• noun a visitor to whom hospitality is extended
• noun a customer of a hotel or restaurant etc.