WordReference Random House Learner's Dictionary of American English © 2019
weir /wɪr/USA pronunciation   n. [countable]
  1. Civil Engineeringa dam in a stream.
  2. a fence set in a stream in order to catch fish.

WordReference Random House Unabridged Dictionary of American English © 2019
weir  (wēr),USA pronunciation  n. 
  1. Civil Engineeringa small dam in a river or stream.
  2. a fence, as of brush or narrow boards, or a net set in a stream, channel, etc., for catching fish.
  • Middle English were, Old English wer, derivative of root of werian to defend, dam up bef. 900

Collins Concise English Dictionary © HarperCollins Publishers::

weir /wɪə/ n
  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
Etymology: Old English wer; related to Old Norse ver, Old Frisian were, German Wehr

Weir /wɪə/ n
  1. Judith. born 1954, Scottish composer, noted esp for her opera A Night at the Chinese Opera (1987)
  2. Peter. born 1944, Australian film director; his films include Dead Poets Society (1989), The Truman Show (1998), and Master and Commander (2003)

'weir' also found in these entries:
Collocations: a river weir, build a weir to [regulate, raise, control, divert] the water, the weir [regulates] the water level, more...

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