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Alternative forms[edit]



From Icelandic or Old Norse þrömr (edge, brim) (whence also Danish tromme); compare German Trumm. Cognate to Albanian thrumbe (kind of shrub).


thrum (plural thrums)

  1. A thrumming sound.
  2. The fringe of threads of warp left after cloth has been cut off of a loom.
  3. Any short piece of yarn or rope.
  4. (botany) A threadlike part of a flower; a stamen.
  5. (mining) A shove out of place; a small displacement or fault along a seam.
  6. (nautical) A mat made of canvas and tufts of yarn.



thrum (third-person singular simple present thrums, present participle thrumming, simple past and past participle thrummed)

  1. To cause a steady rhythmic vibration, usually by plucking.
    She watched as he thrummed the guitar strings absently.
  2. To make a monotonous drumming noise.
    to thrum on a table
  3. To furnish with thrums; to insert tufts in; to fringe.
    • Quarles
      Are we born to thrum caps or pick straw?
  4. (nautical) To insert short pieces of rope-yarn or spun yarn in.
    to thrum a piece of canvas, or a mat, thus making a rough or tufted surface