1. laughing quietly or softly, especially in a pleased or amused way
Usage: present participle of chuckle

1. the act or sound of quiet, soft laughter
Usage: gerund form

Examples

• She was chuckling at the funny comic strip.
• The grandfather sat chuckling while watching his grandchildren play.
• I could hear him chuckling to himself in the next room.
• The comedian’s joke had everyone chuckling softly.
• His constant chuckling during the movie annoyed other viewers.
• The chuckling from the audience encouraged the speaker.
• There was gentle chuckling when the cat fell asleep standing up.