kelly

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kelly (1), noun, adjective. kelly green.

kelly

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kelly (2), noun, pl.-lies.
(U.S. Slang.) a stiff hat, especially a flat-brimmed straw hat.

kelly

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kelly (3), noun, pl.-lies.
a hollow steel tube about 40 feet long with four or six sides that forms the uppermost part of the drill stem of an oil well.