[{"Bold_text": "verb (used without object)", "List Items": ["to utter words or sounds in succession with musical modulations of the voice; vocalize melodically.", "to perform a song voice composition:She promised to sing for us.", "to produce melodious sounds, usually high in pitch, as certain birds, insects, etc.:The nightingale sang in the tree.", "to compose poetry:Keats sang briefly but gloriously.", "to tell about or praise someone or something in verse or song:He sang of the warrior's prowess.", "to admit of being sung, as verses:This lyric sings well.", "to give out a continuous ringing, whistling, murmuring, burbling, or other euphonious sound, as a teakettle or a brook.", "to make a short whistling, ringing, or whizzing sound:The bullet sang past his ear.", "(of an electrical amplifying system) to produce an undesired self-sustained oscillation.", "to have the sensation of a ringing or humming sound, as the ears.", "Slang.to confess or act as an informer; squeal."]}, {"Bold_text": "verb (used with object)", "List Items": ["to utter with musical modulations of the voice, as a song.", "to escort or accompany with singing.", "to proclaim enthusiastically.", "to bring, send, put, etc., with or by singing:She sang the baby to sleep.", "to chant or intone:to sing mass.", "to tell or praise in verse or song."]}, {"Bold_text": "noun", "List Items": ["the act or performance of singing.", "a gathering or meeting of persons for the purpose of singing:a community sing.", "a singing, ringing, or whistling sound, as of a bullet."]}, {"Bold_text": "verb phrase", "List Items": ["Informal.to call in a loud voice; shout:They lost their way in the cavern and sang out for help."]}, {"Bold_text": "abbreviation for", "List Items": ["singular."]}]