Meaning

noun the musical director of a choir

noun the official of a synagogue who conducts the liturgical part of the service and sings or chants the prayers intended to be performed as solos

originEtymology tree Proto-Indo-European *keh₂n-der. Proto-Italic *kanō Latin canō Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin cantorbor. English cantor Borrowed from Latin cantor, agent noun from perfect passive participle cantus, from verb canere (“to sing”) + -or (“agent suffix”). Doublet of chanter.

Etymology from Wiktionary, CC BY-SA 3.0