A weir is a low barrier which is built across a river in order to control or direct the flow of water.
2. countable noun
A weir is a wooden fence which is built across a stream in order to create a pool for catching fish.
weir in British English
(wɪə)
noun
1.
a low dam that is built across a river to raise the water level, divert the water, or control its flow
2.
a series of traps or enclosures placed in a stream to catch fish
Word origin
Old English wer; related to Old Norse ver, Old Frisian were, German Wehr
Weir in British English
(wɪə)
noun
1.
David (Russell). born 1979, English wheelchair athlete; won ten medals for Britain, including six golds, over three Olympic Games (2004–2012); won the London Marathon a record eight times
2.
Judith. born 1954, Scottish composer: her operas include A Night at the Chinese Opera (1987), and Armida (2005); Master of the Queen's Music from 2014
3.
Peter. born 1944, Australian film director; his films include Dead Poets Society (1989), The Truman Show (1998), and Master and Commander (2003)
weir in American English
(wɪr)
noun
1.
a low dam built in a river to back up or divert water, as for a mill; milldam
2.
a fence, as of brushwood or stakes, built in a stream, channel, etc., for catching fish
3.
an obstruction placed in a stream, diverting the water through a prepared aperture for measuring the rate of flow
Word origin
ME were < OE wer, weir, dam (akin to Ger wehr) < base of werian, to defend, dam up < IE base *wer-, to shut up, cover
weir in Chemical Engineering1
(wɪər)
Word forms: (regular plural) weirs
noun
(Chemical Engineering: Distillation)
A weir is a channel at the entry to or exit from a distillation tray.
Outlet weirs maintain a desired liquid level on the tray.
Liquid is introduced to the top tray by a pipe distributor or weir.
A weir is a channel at the entry to or exit from a distillation tray.
weir in Chemical Engineering2
(wɪər)
Word forms: (regular plural) weirs
noun
(Chemical Engineering: Fluids storage and transport)
A weir is a device for measuring flow in an open channel flow.
Weirs are frequently used for flow measurement in open unpressurized channels such as wastewatersystems and sewers.
Weirs and flumes can be used to measure flow in open channels such as plant effluents orsewage flows.
A weir is a device for measuring flow in an open channel flow.
Examples of 'weir' in a sentence
weir
The path swung inwards as the river banks closed, concentrating the water flow into the weir.
Stewart, Michael GRACE
The soldiers were on the lower path by the weir - everyone is agreed on that.
Barnard, Robert THE DISPOSAL OF THE LIVING
Now all we have to find out is how it came to be there by the weir.
Barnard, Robert THE DISPOSAL OF THE LIVING
In other languages
weir
British English: weir NOUN
A weir is a low barrier which is built across a river in order to control or direct the flow of water.