intransitive. To growl, snarl; to chatter, chide; to chirp, twitter.

intransitive. To make or utter a dull sound of vibration or trilling; to buzz as an insect; to snarl as a dog; to pronounce a trilled r.

intransitive. To growl, roar.

intransitive. To snarl, growl. (Cf. gnarl, v.1)

intransitive. Of dogs, etc.: to snarl or growl.

intransitive. To make a roaring or rumbling noise; to purr, as a cat; to snarl or growl, as a dog. (Cf. wharl, v., whirr, v. 3a 3b.)

intransitive. Of dogs, etc.: To make an angry sound accompanied by showing the teeth.

intransitive. To snarl.

intransitive. Of persons and animals: To utter dull inarticulate sounds; to mutter, mumble, murmur; to growl faintly.

intransitive. To snarl or growl, as or like a dog.

dialect. To snarl or growl; to purr.

intransitive. Of an animal: to utter a low guttural sound, expressive of rising anger.

intransitive. To snarl, growl.

transferred. To make a noise in the throat, as in gargling.

intransitive. To growl; to make the noise ‘grr’; (hence) to be angry.