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plural monsieurs or messieurs
(dated) A man, especially a French gentleman. quotations examples
Pass round the decanters; glad to see ye; fill up, monsieurs!
1851 November 14, Herman Melville, “The Cabin”, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, page 589