1. present participle of chirk; to make a sharp, trilling sound like a bird or cricket
Usage: informal; often used of insects or small birds
2. present participle of chirk; to cheer up or become cheerful (chiefly British dialect)
Usage: dialect; archaic

Examples

• The crickets were chirking loudly in the grass at dusk.
• A small bird was chirking from the branch above us.
• The frogs began chirking as soon as the sun set.
• She found the sound of insects chirking in the garden quite soothing.
• The cicadas were chirking incessantly throughout the summer evening.