Synonyms:
purr
Meaning: a low vibrating sound typical of a contented cat
Usage examples
Let them purr.
Advise you to purr soft and look humble--if you can.
I never see a Mrs. Mouser rubbing her soft coat against me, with round upturned eyes, but I translate her purr into words like these:--'I can't swim; I can neither fetch and carry, nor guard the house; I can only love you, mistress; pray accept all I have to offer.'"