Webster’s Revised Unabridged Dictionary · 1913
Chorus
Cho′rus (kō′rŭs), n.; pl. Choruses (#). [L., a dance in a ring, a dance accompanied with song; a chorus, a band of dancers and singers. Gr. χορός. See Choir.]
1. (Antiq.) A band of singers and dancers.
The Grecian tragedy was at first nothing but a chorus of singers. Dryden.
2. (Gr. Drama) A company of persons supposed to behold what passed in the acts of a tragedy, and to sing the sentiments which the events suggested in couplets or verses between the acts; also, that which was thus sung by the chorus.
What the lofty, grave tragedians taught In chorus or iambic. Milton.
3. An interpreter in a dumb show or play. [Obs.]
4. (Mus.) A company of singers singing in concert.
5. (Mus.) A composition of two or more parts, each of which is intended to be sung by a number of voices.
6. (Mus.) Parts of a song or hymn recurring at intervals, as at the end of stanzas; also, a company of singers who join with the singer or choir in singer or choir in singing such parts.
7. The simultaneous of a company in any noisy demonstration; as, a Chorus of shouts and catcalls.
Cho′rus, v. i. [imp. & p. p. Chorused; p. pr. & vb. n. Chorusing.] To sing in chorus; to exclaim simultaneously. W. D. Howells.