from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A fence or wattle placed in a stream to catch or retain fish.
- n. A dam placed across a river or canal to raise or divert the water, as for a millrace, or to regulate or measure the flow.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An adjustable dam placed across a river to regulate the flow of water downstream.
- n. A fence placed across a river to catch fish.
from the GNU version of the Collaborative International Dictionary of English
- n. A dam in a river to stop and raise the water, for the purpose of conducting it to a mill, forming a fish pond, or the like.
- n. A fence of stakes, brushwood, or the like, set in a stream, tideway, or inlet of the sea, for taking fish.
- n. A long notch with a horizontal edge, as in the top of a vertical plate or plank, through which water flows, -- used in measuring the quantity of flowing water.
from The Century Dictionary and Cyclopedia
- n. A dam erected across a river to stop and raise the water, as for the purpose of taking fish, of conveying a stream to a mill, of maintaining the water at the level required for navigating it, or for purposes of irrigation.
- n. A fence, as of twigs or stakes, set in a stream for catching fish.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a low dam built across a stream to raise its level or divert its flow
- n. a fence or wattle built across a stream to catch or retain fish
Middle English were, from Old English wer; see wer-4 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Old English wer, akin to Old Norse ver ("station for fishing"). (Wiktionary)