A deputy master; a subordinate or assistant master in a school, etc.; an assistant headmaster.

An assistant to a schoolmaster or head-teacher; an under-master, assistant-master. Now rare. Also in figurative context.

A subordinate instructor; esp. in schools, a master or teacher below the head-master.

(under-, prefix1 affix 3a(a).)

An assistant teacher; an under-master. Obsolete.

(under-, prefix1 affix 3a(a).)

An usher in a school. (Cf. doctor, n. 1b.)

an under-teacher, an usher.

(under-, prefix1 affix 3a(a).)

In combinations (either as adjective, or as noun in apposition). assistant curate: see curate, n. 1b; assistant master, assistant mistress (in a…

a female usher.

teaching assistant.