(idiomatic) in unison, all together (at the same time)

A group of singers and dancers in a theatrical performance or religious festival who commented on the main performance in speech or song. / A song performed by the singers of such a group.

To sing (a song), express (a sentiment), or recite or say (words) in chorus. / To express concurrence with (something said by another person); to echo.

The collective singing and vocalising of birds.

(historical) The chorus that performed the songs and dances of the dithyrambic odes at Athens, dancing round the altar of Bacchus in a circle.

A female chorus line dancer.

plural of chorus girl

plural of chorus line

Early-morning birdsong. / Radio interference sometimes experienced at sunrise.

A line of performers in a revue or other show, dancing in unison.