"growl : (intransitive) To utter a deep guttural sound, as an angry animal; to give forth an angry,..."

“growl : (intransitive) To utter a deep guttural sound, as an angry animal; to give forth an angry, grumbling sound.
(intransitive, jazz) Of a wind instrument: to produce a low-pitched rumbling sound.
(intransitive, software) To send a user a message via the Growl software library.
(transitive) To express (something) by growling.
(transitive, jazz) To play a wind instrument in a way that produces a low-pitched rumbling sound.”

- https://en.wiktionary.org/wiki/growl#English

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