O / ornus
noun

ornus

gen. orni · gender feminine · decl. 2nd
the wild mountain-ash
the wild mountain-ash: steriles orni, Verg. G. 2, 111; Hor. C. 3, 27, 58; Plin. 16, 18, 30, ยง 73; Col. Arbor. 16; Juv. 1, 11.โ€”
a lance by extension
Transf., a lance made of the wood of this tree: vibrabilis ornus Achilli, Aus. Ep. 24, 108.