thrum

Thrum is a polysemous English word with several related but distinct senses. As a noun, it most commonly denotes a low, continuous sound, such as the thrum of distant engines or machinery. It can also describe a dull, droning musical tone produced by striking or plucking strings, especially when the sound is soft and unvaried.

In textile language, thrums are loose ends or short fibers left after weaving, or the protruding wisps of thread on a finished fabric. They may form a fringe or be tucked away in finishing, and historically thrums could be used in decorative or practical ways in textile crafts.

As a verb, thrum means to strike or pluck a stringed instrument with a soft, regular rhythm, producing a muted tone. A person may thrum on a guitar, lute, or similar instrument when playing in a restrained or aimless manner.

Etymology: The term comes from Old English thrum, with attestations in Middle English. The exact origin is uncertain, but the senses relating to sound and to weaving are longstanding and appear in English for many centuries.

Usage notes: Thrum is more common in literary or historical contexts than in contemporary technical writing. The meaning depends on context: it can describe a sound, a type of textile end, or a manner of playing a stringed instrument.