Meaning of fluff

fluff

1. light, downy particles, as of cotton.
2. a soft, light, downy mass: a fluff of summer clouds.
3. something of no consequence: The book is pure fluff, but fun to read.
4. an error or blunder, esp. an actor's memory lapse in the delivery of lines.

1. to make into fluff; shake or puff out (feathers, hair, etc.) into a fluffy mass (often fol. by up): to fluff up the sofa pillows.
2. to make a mistake in: The leading man fluffed his lines.

1. to become fluffy; move, float, or settle down like fluff.
2. to make a mistake, esp. in the delivery of lines by a performer; blunder.