Lewis Short
(verb) : monstro, āvi, ātum, (archaic mostro; v. Brix ad Plaut. Trin. 2, 2, 61), 1, like monstrum, from moneo
* To show, point out, to indicate, intimate, inform, advise, teach, instruct, tell any thing (in class. prose very rare, and only in the lit. signif.; in Cic. only a few times; in Caes. and Sall. not at all; syn.: indico, significo, ostendo, exhibeo).
* In gen.: qui erranti comiter monstrat viam, Enn. ap. Cic. Off. 1, 16, 51 (Trag. v. 387 Vahl.); cf.: qui sibi semitam non sapiunt, alteri monstrant viam, id. ap. Cic. Div. 1, 58, 132 (Trag. v. 358 Vahl.): iter,Curt. 5, 13, 9: palmam,Cic. Leg. 1, 1, 2: digito,Hor. S. 2, 8, 26; Pers. 1, 28: monstra quod bibam,Plaut. Men. 5, 1, 42; Ter. Ad. 4, 2, 31: tu ... si quid librari ... non intellegent, monstrabis, i. e. dices,Cic. Fam. 16, 22, 1: res gestae ... Quo scribi possent numero, monstravit Homerus,Hor. A. P. 73: inulas ego primus amaras Monstravi incoquere,id. S. 2, 8, 51 sq.: monstrate mearum Vidistis si quam hic errantem forte sororum,Verg. A. 1, 321: cujus prudentia monstrat Summos posse viros ... nasci, etc.,Juv. 10, 48.—Pass.: quod monstror digito praetereuntium,Hor. C. 4, 3, 22.— Impers. pass.: si voles advortere animum, comiter monstrabitur, Enn. ap. Varr. L. L. 7, § 89 Müll. (Trag. v. 386 Vahl.).
* In partic.
* To ordain, institute, appoint (poet.): monstratas excitat aras,appointed,Verg. G. 4, 549: piacula,id. A. 4, 636: ignis,Ov. Tr. 3, 11, 53.
* To indict, impeach for a crime, to denounce, accuse, inform against (post-Aug.): alii ab amicis monstrabantur,were pointed out, informed against,Tac. H. 4, 1: Nerone Scribonios fratres ... ad exitium,id. ib. 4, 41.
* To advise a person in any manner, or to do any thing: alicui bene,Plaut. Bacch. 1, 2, 25: non periclumst ne quid recte monstres,id. Ps. 1, 3, 55: conferre manum pudor iraque monstrat,advise, urge,Verg. A. 9, 44.—Hence, monstrātus, a, um, P. a., conspicuous, distinguished, remarkable (Tacitean): et hostibus simul suisque monstrati,Tac. G. 31: propinquitate Galbae monstratus,id. H. 1, 88.
Charlton T. Lewis, Charles Short, A Latin Dictionary