a female student who helps keep order or assists a teacher in school.
a girl or woman who admonishes, especially with reference to conduct.

Origin of monitress

First recorded in 1740–50; monit(o)r + -ess

Usage note

See -ess. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for monitress

Historical Examples of monitress