to utter a low, continuous, murmuring sound expressive of contentment or pleasure, as a cat does.

(of things) to make a sound suggestive of the purring of a cat

The new motor of the car purred.

to express by or as if by purring.

the low, vibrating sound made by a cat by the contracting of the laryngeal muscles and the diaphragm as it breathes.

a sound resembling this.

the act of purring.

noun

hum , murmur , noise , sing , sound