D defs.my
Entry 1 sense Webster, 1913

Re

/(rā)/ · IPA /ɹiː/
01 A syllable applied in solmization to the second tone of the diatonic scale of C; in the American system, to the second tone of any diatonic…
  1. 1.
    A syllable applied in solmization to the second tone of the diatonic scale of C; in the American system, to the second tone of any diatonic scale.(Mus.)