Hypertext Webster Gateway: "wasteweir"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Wasteweir \Waste"weir`\, n.
An overfall, or weir, for the escape, or overflow, of
superfluous water from a canal, reservoir, pond, or the like.
From WordNet (r) 1.7 (wn)
wasteweir
n : a channel that carries excess water over or around a dam or
other obstruction [syn: {spillway}, {spill}]
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