Meaning of “chorus” - Learner’s Dictionary

chorus

noun uk us /ˈkɔːrəs/
SONG [ C ]

the part of a song that is repeated several times

SINGING GROUP [ group ]

a large group of people who sing together

IN A SHOW [ group ]

a group of dancers and singers in a show who do not have the main parts

a chorus of approval/demands/protest, etc

something that a lot of people say at the same time

(Definition of “chorus noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)