Definition of "obsidional" [ob•sid•i•o•nal]

• Pertaining to a siege. (adjective)

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• "The obsidional were the reward of a general who had delivered a besieged city, (Aulus Gellius, Noct."
• "‘We shall hardly,’ said he one morning to Waverley when they had been viewing the Castle — ‘we shall hardly gain the obsidional crown, which you wot well was made of the roots or grain which takes root within the place besieged, or it may be of the herb woodbind, parietaria, or pellitory; we shall not, I say, gain it by this same blockade or leaguer of Edinburgh Castle.’"
• "-- The obsidional, or _siege pieces_, struck by the partizans of this monarch during the civil wars, are extremely interesting, and, with the exception of those coined at Newark, are all rare."