Soft, light particles or fibers that accumulate, especially from fabric or fur. Also refers to trivial or insubstantial content, or to make something appear fuller and softer.
Probably imitative in origin, first recorded in the 18th century, possibly related to 'flue' (down, nap of cloth). The word captures the light, airy quality of loose fibers through its soft consonants and vowel sound.
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