thrum

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thrum1 / [unvoicedth]rəm/ • v. (thrummed, thrum·ming) [intr.] make a continuous rhythmic humming sound: the boat's huge engines thrummed in his ears. ∎  [tr.] strum (the strings of a musical instrument) in a rhythmic way.• n. [usu. in sing.] a continuous rhythmic humming sound: the steady thrum of rain on the windows.thrum2 • n. (in weaving) an unwoven end of a warp thread, or a fringe of such ends, left in the loom when the finished cloth is cut away. ∎  any short loose thread.• v. (thrummed , thrum·ming ) [tr.] cover or adorn (cloth or clothing) with ends of thread.DERIVATIVES: thrum·mer n.thrum·my adj.

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