obsĭdĭōnālis, e, adj. [obsidio],
of or belonging to a siege : corona, a crown of grass, granted as a reward to a general who rescued others from siege , Paul. ex Fest. p. 190 Müll.; so Liv. 7, 37, 2; Plin. 22, 4, 4, § 7; Gell. 5, 6, 8; Aur. Vict. Vir. Ill. 59: machinae, Amm. 24, 1: morae, Front. Strat. 1, 3, 4: mala, Amm. 14, 2.