noun 1.a classroom in
which pupils in the same grade or division of a grade meet at certain times under the supervision of a teacher, who takes attendance and administers other school business.
2.(in an elementary school) the classroom in which pupils in the same grade or division of a grade receive instruction in all subjects except those requiring special facilities.
3.the pupils in a particular homeroom.
Also, home room.
Origin: 1910–15, Americanism;
home +
room