The member of staff at a restaurant who keeps the wine cellar and advises the guests on a choice of wines; a wine steward / stewardess, a wine waiter / waitress / server.
To act as a sommelier.
A male or female attendant who serves customers at their tables in a restaurant, café or similar.
A person working as an attendant at the London Stock Exchange.
Someone who waits for somebody or something; a person who is waiting.
To work as a waiter.