What does accentor mean?
The definition of accentor
Ac*cen”tor, n.
Etym: [L. ad. + cantor singer, canere to sing.]

1 (Mus.)
One who sings the leading part; the director or leader. [Obs.]
2 (Zoöl.)
A genus of European birds (so named from their sweet notes), including the hedge warbler. In America sometimes applied to the water thrushes.