Purrs meaning : The vibrating sound made by a cat in its throat when contented. A throaty, seductive sound of pleasure made by a person. The low consistent rumble made by an engine at slow speed Of a cat, to make a vibrating sound in its throat when contented. To say (something) in a throaty, seductive manner. To make a vibrating throaty sound, as from pleasure. (of an engine) To make a low and consistent rumbling sound.