dial. and colloq. [A popular formation, app. from contrive (or its variant contreve): cf. conceive, conception; some vague association with trap may have entered in.] A contrivance, a device (with suggestion of ingenuity rather than effectiveness).

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1835.  York (PA) Gaz., 17 Feb., 2/2. I can’t say as how I see what’s to be the end of all their new fangled contraptions.

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1847.  Halliwell, Contraption, contrivance. West.

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1859.  Type of the Times (Ohio), 1 Feb. If the author had not attempted to supplant the [ordinary] Phonography … by his own quirks and contraptions … he would have made a very useful book.

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1863.  W. Barnes, Gloss. Dorset Dialect, Contraption, a contrivance.

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1883.  in Hampshire Gloss. (E.D.S.).

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1888.  in Elworthy, W. Somerset Word-bk.

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1890.  Temple Bar Mag., July, 355. Saltpetre and sulphur, and the contraptions necessary for catherine wheels and rockets.

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