M / magnārĭus
noun

magnārĭus

gen. magnārii · gender masculine · decl. 2nd
belonging to what is great; in the gross
of or belonging to what is great or in the gross (post-class.): negotiator magnarius, a dealer in gross, wholesale dealer, App. M. 1, p. 104, 24: PISTOR, Inscr. Orell. 4264; Inscr. Grut. 283, 1.