U / ulcus
noun #1160

ulcus

gen. ulcĕris · gender neuter · decl. 3rd
(), , ἕλκος
a sore; ulcer
a sore, ulcer.
Lit., Cels. 5, 9; 5, 14; 5, 26, n. 31; 5, 28, n. 6 al.; Plin. 23, 6, 60, § 112; 23, 9, 81, § 161; 22, 23, 49, § 103; Lucr. 6, 1148; 6, 1166; Verg. G. 3, 454; Hor. Ep. 1, 16, 24; Pers. 3, 113 al.—Prov.: ulcus tangere, to touch a sore spot, touch on a delicate subject, Ter. Phorm. 4, 4, 9.—
an excrescence by extension
Transf., of trees, an excrescence, Plin. 17, 24, 37, § 227: montium hulcera, i. e. marble quarries, id. 36, 15, 24, § 125.—
it will prove a sore place; will turn out absurd figuratively
Trop.: ulcus (i. e. amor) enim vivescit et inveterascit alendo, Lucr. 4, 1068: quicquid horum attigeris, ulcus est, it will prove a sore place, i. e. will turn out absurd, Cic. N. D. 1, 37, 104: si tu in hoc ulcere tamquam inguen exsisteres, id. Dom. 5, 12.