Lewis Short
(adj.adv.) : trux, ŭcis (abl. usually truci, but truce in Cic. Agr. 2, 25; Ov. Tr. 4, 7, 14), adj. perh. τρύξ, new, unfermented wine; hence, trop.
* Wild, rough, hard, harsh, savage, fierce, ferocious, grim, stern (mostly poet.; cf.; truculentus, torvus).
* Of living beings: horridus ac trux tribunus plebis,Cic. Agr. 2, 25, 65: M. Catonem oratorem non solum gravem sed interdum etiam trucem esse scimus,Liv. 34, 5, 6: insectator,id. 3, 33, 7: puer,i. e. Achilles,Sen. Troad. 832: puellae,i. e. Amazons,id. Oedip. 479: tyrannus,id. Herc. Fur. 937: arietes,Plaut. Bacch. 5, 2, 29: ferae,Tib. 1, 9, 76: aper,Ov. M. 10, 715: taurus,id. ib. 7, 111; 8, 297; 9, 81: Theron,id. ib. 3, 211: blattae,ravaging,Mart. 14, 37, 2 et saep.—*
* With inf.: trux audere,bold, daring,Sil. 13, 220.
* Of things concrete and abstract: (testudo) aspectu truci, Pac. ap. Cic. Div. 2, 64, 133 (Trag. Rel. v. 3 Rib.): oculi (draconis), Cic. poët. N. D. 2, 42, 107: vultus,Hor. Epod. 5, 4: quemque vocant aliae vultum rigidumque trucemque,Ov. H. 4, 73: voltu truci,Liv. 45, 10, 8: faciesque truces oculique minaces,Luc. 7, 291: pelagus,Hor. C. 1, 3, 10: venti,Plin. 2, 36, 36, § 100: Eurus, Ov M. 15, 603: classicum,Hor. Epod. 2, 5: truci cantu,Liv. 5, 37, 8: sonor,Tac. A. 1, 65: vox,Sil. 1, 67: herbae tactu,Plin. 22, 6, 7, § 17: per lucos vetustā religione truces,Claud. Laud. Stil. 1, 229: animus,Ov. A. A. 2, 477: sententia,Liv. 29, 19, 4: genus dicendi trux atque violentum,Quint. 11, 1, 3: inimicitiae,Hor. Ep. 1, 19, 49: eloquentia,Tac. A. 6, 48: oratio,id. H 4, 42.—Comp. and sup. given without examples in Rhemn. Palaem. p. 1369 P.— Hence, trŭcĭter, adv., fiercely (late Lat.), Aldh. Laud. Virg. 35.
Charlton T. Lewis, Charles Short, A Latin Dictionary