Thrum (?), n. [OE. thrum, throm; akin to OD. drom, D. dreum, G. trumm, lump, end, fragment, OHG. drum end, Icel. &unr_;römr edge, brim, and L. terminus a limit, term. Cf. Term.] [Written also thrumb.] 1. One of the ends of weaver's threads; hence, any soft, short threads or tufts resembling these.
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2. Any coarse yarn; an unraveled strand of rope.
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3. (Bot.) A threadlike part of a flower; a stamen.
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4. (Mining) A shove out of place; a small displacement or fault along a seam.
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5. (Naut.) A mat made of canvas and tufts of yarn.
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Thrum cap, a knitted cap. Halliwell. -- Thrum hat, a hat made of coarse woolen cloth. Minsheu.
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Thrum, v. i. [CF. Icel. &unr_;ruma to rattle, to thunder, and E. drum.] 1. To play rudely or monotonously on a stringed instrument with the fingers; to strum.
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2. Hence, to make a monotonous drumming noise; as, to thrum on a table.
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