1)A group of people who sing together. They are often divided into several main voice parts including: sophranos,
altos,
tenors, and basses. In addition, these may vary according to the nature of the choir. A men's choir might have a full range of parts including
tenor,
baritone, and bass, while a woman's choir might have 1st and 2nd sophranos, contraltos, and/or altos. A mixed choir usually has some combination of both. There are also show choirs, who usually do choreographed dance moves to add
flair to their singing.
Gospel choirs are usually found in churches, as are regular church choirs.
2) In a high school setting, choir is a sometimes overlooked class or activity. True choir lovers can usually be identified by the way they randomly break out singing anywhere, anytime. There are sometimes even section stereotypes, just as in band: sophranos are
ditzy, altos are just jealous of the sophranos, etc. Choirs can often be spotted wearing rather dorky but cool choir
robes.