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1. the male head servant in a large or important household, with responsibilities that include overseeing the other staff, taking care of the wine and silverware, and sometimes receiving guests in secrecy or in a surreptitious way, often through the rear entrance of the houshold.

2. Homosexual. (slang)(often considered offensive)

see ass pirate
Little did they know that Oliver was a backdoor butler.
by October 05, 2004
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