Cat's sound of self-relaxation (4)
I believe the answer is:
purr
(Other definitions for purr that I've seen before include "Cat noise" , "Cat's coo" , "Soft sound from car or cat" , "Express contentment" , "Happy feline sound" .)
I believe the answer is:
purr
(Other definitions for purr that I've seen before include "Cat noise" , "Cat's coo" , "Soft sound from car or cat" , "Express contentment" , "Happy feline sound" .)