Entry 1 sense Webster, 1913 Cello /(chĕl"lō̇)/ · Cel·lo · IPA /ˈt͡ʃɛloʊ/ 01 n. A contraction for Violoncello. pl. Cellos, Celli ((chĕl"lō̇z)) 1. A contraction for Violoncello. See: Violoncello