Lewis Short
rūna (noun F) :
* A kind of weapon, a javelin or dart.
* Lit.: runa genus teli significat. Ennius: runata recedit, id est pilata,Fest. p. 263 Müll.: C. Gracchus runis et iis sicis, quas, etc.... nonne omnem rei publicae statum permutavit?Cic. Leg. 3, 9, 20 Mos. N. cr.
* Transf., the runic written character, runes: barbara fraxineis pingatur runa tabellis, Ven. Carm. 7, 18, 19.
Charlton T. Lewis, Charles Short, A Latin Dictionary