verb (used without object)
1.
to growl threateningly or viciously, especially with a raised upper lip to bare the teeth, as a dog.
2.
to speak in a surly or threatening manner suggestive of a dog's snarl.
verb (used with object)
3.
to say by snarling:
to snarl a threat.
noun
4.
the act of snarling.
5.
a snarling sound or utterance.