Noun
A framework on which dishes, food, etc., are passed from one room or story of a house to another; a lift for dishes, etc.; also, a piece of furniture with movable or revolving shelves.
Source: Webster's dictionarydumb waiter
The Almeida’s first show in eight months, Nine Lessons and Carols, will have had its first preview already, on 3 December, as will Hampstead Theatre’s 60th anniversary production of Pinter’s The Dumb Waiter. Source: Internet