American English

Definition of Sherlock noun from the Oxford Advanced American Dictionary



(also Sherlock Holmes
NAmE//ˌʃərlɑk ˈhoʊmz//
(informal) (sometimes ironic)
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a person who tries to find an explanation for a crime or something mysterious, or who shows that they understand something quickly, especially something that is not obvious Oh, well done, Sherlock. Did you figure that out all by yourself? Look, I'm no Sherlock Holmes, but I think I know who wrote that letter. From Sherlock Holmes, a very clever detective in stories by Arthur Conan Doyle, published in the late 19th and early 20th centuries.
See the Oxford Advanced Learner's Dictionary entry: Sherlock