1. to snarl or growl, especially of an animal
Usage: informal; often used to describe the sound a dog makes
2. to perform well or aggressively in extreme sports, especially skiing or snowboarding
Usage: slang; primarily used in skiing and snowboarding communities

Examples

• The dog began to gnar at the stranger approaching the fence.
• The skier was gnarring down the mountain at incredible speed.
• He heard the engine gnar as the car accelerated.
• She loves to gnar on the slopes whenever there's fresh powder.
• The wolf started to gnar when it sensed danger nearby.