Hypertext Webster Gateway: "orillon"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Orillon \O*ril"lon\, n. [F., lit., a little ear, from oreille an
ear, fr. L. oricula, auricula, dim. of auris an ear. See
{Ear}.] (Fort.)
A semicircular projection made at the shoulder of a bastion
for the purpose of covering the retired flank, -- found in
old fortresses.
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