definition of
purr

[1] #1 purr n. a low vibrating sound typical of a contented cat. wn

[2] #2 purr v. [whizz, whiz, whirr, whir, birr] make a soft swishing sound; "the motor whirred"; "the car engine purred". wn

[3] #3 purr v. [make vibrant sounds] indicate pleasure by purring; characteristic of cats. wn