teacher (teachers plural )A teacher is a person who teaches, usually as a job at a school or similar institution. n-count ...her chemistry teacher. →
supply teacher
head teacher (head teachers plural ), headteacher A head teacher is a teacher who is in charge of a school.
(BRIT) n-count
(=head)
parent-teacher association (parent-teacher associations plural )A parent-teacher association is the same as a PTA. n-count
substitute teacher (substitute teachers plural )A substitute teacher is a teacher whose job is to take the place of other teachers at different schools when they are unable to be there.
(AM) n-count
in BRIT, use supply teacher
supply teacher (supply teachers plural )A supply teacher is a teacher whose job is to take the place of other teachers at different schools when they are unable to be there.
(BRIT) n-count
in AM, use substitute teacher