Hypertext Webster Gateway: "quadra"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Quadra \Quad"ra\, n.; pl. {Quadr[ae]}. [L., a square, the socle,
a platband, a fillet.] (Arch.)
(a) The plinth, or lowest member, of any pedestal, podium,
water table, or the like.
(b) A fillet, or listel.
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