M / mŏnĭtōrĭus
adjective

mŏnĭtōrĭus

fem. mŏnĭtōria · neut. mŏnĭtōrium
that serves to remind; admonish, monitory
that serves to remind or admonish, monitory (post-Aug.): fulmen, Sen. Q. N. 2, 39, 2; id. ib. 2, 49, 1.