n. [ OE. quer, OF. cuer, F. chœur, fr. L. chorus a choral dance, chorus, choir, fr. Gr. &unr_;, orig. dancing place; prob. akin to &unr_; inclosure, L. hortus garden, and E. yard. See Chorus. ] 1. A band or organized company of singers, especially in church service. [ Formerly written also quire. ] [ 1913 Webster ]

2. That part of a church appropriated to the singers. [ 1913 Webster ]

3. (Arch.) The chancel. [ 1913 Webster ]

Choir organ (Mus.), one of the three or five distinct organs included in the full organ, each separable from the rest, but all controlled by one performer; a portion of the full organ, complete in itself, and more practicable for ordinary service and in the accompanying of the vocal choir. --
Choir screen,
Choir wall (Arch.), a screen or low wall separating the choir from the aisles. --
Choir service, the service of singing performed by the choir. T. Warton. [ 1913 Webster ]

n. a boy who sings in a choir. [ WordNet 1.5 ]

n. the musical director of a choir.
Syn. -- precentor, cantor. [ WordNet 1.5 ]