s. w. dial. Also washamouth. [f. WASH v. Cf. G. waschmaul of the same meaning.] One who blabs out everything; a babbler.

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1746.  Exmoor Scolding, 138. Hold thy Popping, ya gurt Washamouth.

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1891.  ‘Q’ [Quiller-Couch], Noughts & Cr., iii. 20. Parson Morth wanted to know if he couldn’t let his cottage to an invalid lady and her sister without consulting every wash-mouth in the parish.

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