an organized group of singers, especially one that takes part in church services or performs in public:a church choirthe choir of the University of Ulster
one of two or more subdivisions of such a group performing together:his famous Spem in alium for eight five-part choirs
the part of a cathedral or large church between the high altar and the nave, used by the choir and clergy:it has tall, twin western towers and spires and a long nave and choir
a group of instruments of one family playing together:a clarinet choir
