<p><strong>Verb</strong></p><ul><li>(used without object)<ul><li>To laugh in a silly, often high-pitched way, especially with short, repeated gasps and titters, as from juvenile or ill-concealed amusement or nervous embarrassment.</li><li>Synonyms: chuckle, snigger, snicker</li></ul></li></ul><p><strong>Noun</strong></p><ul><li>A silly, spasmodic laugh; titter.</li><li>Synonyms: chuckle, snigger, snicker</li><li>Slang: an amusing experience, incident, etc.: Going to a silly movie was always a giggle.</li></ul>