Толковый словарь английского языка Oxford English Reference - visitor

n. 1 a person who visits a person or place. 2 a migratory bird present in a locality for part of the year (winter visitor). 3 Brit. (in a college etc.) an official with the right or duty of occasionally inspecting and reporting. Phrases and idioms visitors' book a book in which visitors to a hotel, church, embassy, etc., write their names and addresses and sometimes remarks. Etymology: ME f. AF visitour, OF visiteur (as VISIT)