A paid servant, especially one who has been employed for many years.
A fee one pays to reserve the other's time for services.
A device that holds teeth in position after orthodontic treatment.
Any thing or person that retains.
A dependent or follower of someone of rank.
A retaining valve.
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.