A prefect or monitor at various English public schools. Cf. praepostor, n. Also figurative and in extended use.

A school pupil or (esp. U.S.) college student assigned disciplinary or other responsibilities (formerly in some cases including teaching of junior…

A university student appointed as a monitor or prefect over a part of a class. Obsolete. rare.

= prepositor, n.1 1.

At some British public schools: a senior pupil charged with certain administrative or disciplinary duties; a prefect or monitor. See prepositor, n.1…

A female school pupil assigned disciplinary or other special responsibilities; a female monitor (monitor, n. 8).

In some schools (originally British public schools): any one of a number of senior pupils given authority over and disciplinary responsibility…