One who dines.
A typically small restaurant, usually modeled after a railroad dining car, that serves lower-class fare, normally having a counter with stools along one side and booths on the other, and often decorated in 50s and 60s pop culture themes and playing popular music from those decades.
A dining car in a railroad train.
A recipient of hospitality, especially someone staying by invitation at the house of another.
An invited visitor or performer to an institution or to a broadcast.
A user given temporary access to a system despite not having an account of their own.
Any insect that lives in the nest of another without compulsion and usually not as a parasite.
An inquiline.
A patron or customer in a hotel etc.
to appear as a guest, especially on a broadcast
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)