A quiet laugh.

To laugh quietly or inwardly.

(transitive) To communicate through chuckling.

(intransitive, archaic) To make the sound of a chicken; to cluck.

(transitive, archaic) To call together, or call to follow, as a hen calls her chickens; to cluck.

(transitive, archaic) To fondle; to indulge or pamper.

(obsolete) Clumsy.