2. Any coarse yarn; an unraveled strand of rope.
Origin: OE. Thrum, throm; akin to OD. Drom, D. Dreum, G. Trumm, lump, end, fragment, OHG. Drum end, Icel. Romr edge, brim, and L. Terminus a limit, term. Cf. Term
Alternative forms: thrumb.
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