Noun

(en noun)

An adjustable dam placed across a river to regulate the flow of water downstream.

* 1997 , J. H. L'Abée-Lund & J. E. Brittain, "Weir construction as environmental mitigation in Norwegian hydropower schemes", Hydropower '97 , pages 51-54.

The weir' must not represent a physical barrier to fish migration, both locally and throughout the whole river system. If necesary, a fishway is included in the ' weir .

* 2010 , Sathesh Gopi, Basic Civil Engineering , page 303

A walkway over the weir' is likely to be useful for the removal of floating debris trapped by the ' weir , or for working staunches and sluices on it as the rate of flow changes.

A fence placed across a river to catch fish.

* 1887 , W. A. Wilcox, "58-New England Fisheries in May, 1886", Bulletin of the United States Fish Commission , volume VI, for 1886, page 191

The weir catch of mackerel at Monomoy and along Cape Cod has been a failure.

*

, title= Mr. Pratt's Patients, chapter=1 , passage=For a spell we done pretty well. Then there came a reg'lar terror of a sou'wester same as you don't get one summer in a thousand, and blowed the shanty flat and ripped about half of the weir poles out of the sand.}}

Noun

(en noun)

A mouth or aperture, as of a tube, pipe, etc.; an opening; as,

* the orifice of an artery or vein

* the orifice of a wound