1. to make a short, sharp sound; to chirp
Usage: informal; chiefly British
2. to cheer up or make cheerful (often used with 'up')
Usage: informal; chiefly British

Examples

• The birds chirked in the early morning.
• She chirked up after hearing the good news.
• The sparrows chirked loudly outside the window.
• A cheerful song can chirk up your mood.
• He tried to chirk her spirits with a funny joke.