Definitions
1.nounSomeone who visits someone else; someone staying as a guest.
2.nounSomeone who pays a visit to a specific place or event; a sightseer or tourist.
3.noun(usually in the plural) Someone, or a team, that is playing away from home.
4.nounA person authorized to visit an institution to see that it is being managed properly.
5.nounAn extraterrestrial being on Earth for any reason.
6.nounAn object which lands or passes by Earth or its orbit.
7.nounA head or overseer of an institution such as a college (in which case, equivalent to the university's chancellor) or cathedral or hospital, who resolves disputes, gives ceremonial speeches, etc.
8.nounThe object in the visitor pattern that performs an operation on the elements of a structure one by one.