[Echoic: cf. THRUM v.3] An echoic word representing various sounds, esp. the tones produced by ‘thrumming’ a guitar or similar instrument; also dial. the purring of a cat.

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[a. 1553.  Udall, Royster D., II. i. Anon to our gitterne, thrumpledum, thrumpledum thrum.]

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1798.  Lawrence, Treat. Horses, II. i. 18. That … affectionate domestic the cat,… its feet kneading in unison with the grateful thrum.

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1814.  Sporting Mag., XLIV. 128. The soft and melodious thrum evincing the happy state of his [a cat’s] feelings.

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1845.  T. Cooper, Purgatory of Suicides (1877), 110. Fear not Grimalkin! she doth sing ‘three-thrum.’

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1863.  W. Miller, Willie Winkie, ii. The cat’s singing grey thrums To the sleeping hen.

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1883.  Bertha Thomas, George Sand, 119. The distant thrum of guitars.

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1884.  Pall Mall G., 4 July, 4/1. The thrum-thrum, ting-ting, tum-a-tum-tum of their banjoes filled the air.

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