[1] : The Collaborative International Dictionary of English v.0.48

weir \weir\ w=er, wear \wear\,n. oe. wer, as. wer; akin to
   g. wehr, as. werian to defend, protect, hinder, g. wehren,
   goth. warjan; and perhaps to e. wary; or cf. skr. v.r to
   check, hinder. root142. cf. garret.
   1. 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.
      1913 webster

   2. a fence of stakes, brushwood, or the like, set in a
      stream, tideway, or inlet of the sea, for taking fish.
      1913 webster

   3. 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.
      1913 webster
see also:
garret 

[2] : WordNet (r) 2.0

weir
     n 1: a low dam built across a stream to raise its level or divert
          its flow
     2: a fence or wattle built across a stream to catch or retain
        fish

[3] : Moby Thesaurus II by Grady Ward, 1.0

94 moby thesaurus words for "weir":
   aboideau, air lock, arch dam, avenue, backstop, bamboo curtain,
   bank, bar, barrage, barrier, bear-trap dam, beaver dam, blowhole,
   boom, breakwater, breastwork, brick wall, buffer, bulkhead,
   bulwark, channel, chute, cofferdam, dam, debouch, defense, dike,
   ditch, dock gate, door, earthwork, egress, embankment, emunctory,
   escape, estuary, exhaust, exit, fence, flood-hatch, floodgate,
   flume, gate, gravity dam, groin, head gate, hydraulic-fill dam,
   iron curtain, jam, jetty, leaping weir, levee, lock, lock gate,
   logjam, loophole, milldam, moat, mole, mound, opening, out,
   outcome, outfall, outgate, outgo, outlet, parapet, penstock, pore,
   port, portcullis, rampart, roadblock, rock-fill dam, sally port,
   seawall, shutter dam, sluice, sluice gate, spiracle, spout,
   stone wall, tap, tide gate, vent, ventage, venthole, vomitory,
   wall, water gate, way out, wicket dam, work

[4] : U.S. Gazetteer (1990)

weir, ks city, fips 76350
  location: 37.30957 n, 94.77568 w
  population 1990: 730 317 housing units
  area: 2.7 sq km land, 0.0 sq km water
weir, ms town, fips 78520
  location: 33.26330 n, 89.28937 w
  population 1990: 525 196 housing units
  area: 2.7 sq km land, 0.0 sq km water
  zip codes: 39772
weir, tx town, fips 77056
  location: 30.67327 n, 97.59116 w
  population 1990: 220 92 housing units
  area: 4.1 sq km land, 0.0 sq km water

[5] : U.S. Gazetteer Places (2000)

weir, ks -- u.s. city in kansas
   population 2000:    780
   housing units 2000: 352
   land area 2000:     1.046565 sq. miles 2.710591 sq. km
   water area 2000:    0.000000 sq. miles 0.000000 sq. km
   total area 2000:    1.046565 sq. miles 2.710591 sq. km
   fips code:            76350
   located within:       kansas ks, fips 20
   location:             37.308768 n, 94.774289 w
   zip codes 1990:    
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    weir, ks
    weir

[6] : U.S. Gazetteer Places (2000)

weir, tx -- u.s. city in texas
   population 2000:    591
   housing units 2000: 229
   land area 2000:     1.593171 sq. miles 4.126293 sq. km
   water area 2000:    0.000000 sq. miles 0.000000 sq. km
   total area 2000:    1.593171 sq. miles 4.126293 sq. km
   fips code:            77056
   located within:       texas tx, fips 48
   location:             30.675007 n, 97.587862 w
   zip codes 1990:    
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    weir, tx
    weir

[7] : U.S. Gazetteer Places (2000)

weir, ms -- u.s. town in mississippi
   population 2000:    553
   housing units 2000: 234
   land area 2000:     1.050416 sq. miles 2.720566 sq. km
   water area 2000:    0.011427 sq. miles 0.029595 sq. km
   total area 2000:    1.061843 sq. miles 2.750161 sq. km
   fips code:            78520
   located within:       mississippi ms, fips 28
   location:             33.263423 n, 89.289439 w
   zip codes 1990:     39772
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    weir, ms
    weir

Weir >> W Words
Weir, definition of term: Weir
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