M / monstrātus
noun

monstrātus

gen. monstrātūs · gender masculine · decl. 4th
(only in the abl. sing.)
a showing
monstro, a showing (post-class.): cujus monstratu, App. M. 1, p. 112, 24: monstratu Helenae, Aus. Per. Iliad. 3.