Real Dictionary

doorman
countable noun: A doorman is a man who stands at the door of a club, prevents unwanted people from coming in, and makes people leave if they cause trouble.

doorman in American English
a person whose work is opening the door of a building for those who enter or leave, hailing taxicabs, etc.
noun: the door attendant of an apartment house, night club, etc., who acts as doorkeeper and performs minor services for entering and departing residents or guests

doorman in British English
noun: a man employed to attend the doors of certain buildings

doorman in Hospitality
noun: A doorman is a person, usually a uniformed employee, who stands at the door of a building such as a hotel and helps people who are going in or out.