D defs.my
Entry 1 sense Webster, 1913

Violoncello

· Vi·o·lon·cel·lo · IPA /ˌvaɪələnˈt͡ʃɛloʊ/
01 n. A stringed instrument of music; a bass viol of four strings, or a bass violin with long, large strings, giving sounds an octave lower than …
  1. 1.
    A stringed instrument of music; a bass viol of four strings, or a bass violin with long, large strings, giving sounds an octave lower than the viola, or tenor or alto violin.(Mus.)