The earliest-recorded use of the phrase 'dumb waiter' in print was in England in 1749, when Cleland wrote - as part of a description of a dining-table - "A bottle of Burgundy with the other necessaries were set on a dumb waiter." It's clear, therefore, that what Americans now call a Lazy Susan was ORIGINALLY called a Dumb Waiter. That usage preceded the lift-mechanism idea, which was never mentioned in print - this time in the USA - until about 100 years later. So, Fairy Nuff, if this is a quiz-question you need a two-word answer to, I'd certainly go for 'Lazy Susan'. Cheers.