Purr
/pɜːr/noun
To make the low, vibrating sound typical of a content cat; also, to speak or move in a smooth, self-satisfied way.
Did you know?English purr is widely treated as an imitative sound word, one of those rare cases where the word’s shape may have grown directly out of the vibration it names.
Etymological Timeline
Early Modern English
English
purren
“to make a low vibrating sound, especially like a cat”
16th–17th Century
English
purr
“the low vibrating sound made by a cat”
Middle English
English
purren
“to make a murmuring or rumbling sound”
Proto-Indo-European
PIE
*bher- / sound-symbolic
“No secure reconstructed ancestral root; the word is generally considered expressive/onomatopoeic rather than inherited from a specific PIE source”