Lewis Short
ornus (noun F) :
* 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.
* Transf., a lance made of the wood of this tree: vibrabilis ornus Achilli,Aus. Ep. 24, 108.
Charlton T. Lewis, Charles Short, A Latin Dictionary