Anything light, soft or fuzzy, especially fur, hair, feathers. / Anything inconsequential or superficial. / (informal) A lapse or mistake, especially a mistake in an actor's lines.

(transitive) To make something fluffy. / (intransitive) To become fluffy, puff up. / (intransitive) To move lightly like fluff.

plural of fluff

Third-person singular simple present indicative form of fluff

(pornography) A woman who arouses male pornographic actors before filming.

To plump up / (idiomatic) to make a gaffe or blunder. Euphemism for fuck up.

plural of fluff girl

(transitive) To plump up

(New England) marshmallow creme

(astronomy) A relatively dense region of interstellar space (containing our Solar System) that formed where the Local Bubble met another bubble, the Loop I Bubble