Lewis Short
trĭvĭum (noun N) : ter-via.
* Lit., a place where three roads meet, a fork in the roads, cross-road: ut ventum est in trivium,Cic. Div. 1, 54, 123.
* Transf., in gen., a public square, the public street, highway; plur.: in triviis aut in compitis,Cic. Agr. 1, 3, 7: nocturnisque Hecate triviis ululata per urbes,Verg. A. 4, 609; Lucr. 4, 1203: occurram in triviis,Hor. S. 1, 9, 59; id. Ep. 1, 16, 64; 1, 17, 58; id. A. P. 245.— Sing.: pueros in trivio docere,Just. 21, 5; Tib. 1, 1, 12 (22).—Prov.: arripere maledictum ex trivio,i. e. out of the street, from the mob,Cic. Mur. 6, 13.
Charlton T. Lewis, Charles Short, A Latin Dictionary