drain /ˈdren/
 排水溝,陰溝;消耗,負擔(vt.)排去,放幹;耗盡(vi.)流去,流幹


 drain /ˈdren/ 及物動詞
 [=drainage]引流(法),導液(法),排水(設備)


 drain
 汲極; 吸極


 drain
 汲極 洩流


 Drain v. t. [imp. & p. p. Drained p. pr. & vb. n. Draining.]
 1. To draw off by degrees; to cause to flow gradually out or off; hence, to cause the exhaustion of.
    Fountains drain the water from the ground adjacent.   --Bacon.
    But it was not alone that the he drained their treasure and hampered their industry.   --Motley.
 2. To exhaust of liquid contents by drawing them off; to make gradually dry or empty; to remove surface water, as from streets, by gutters, etc.; to deprive of moisture; hence, to exhaust; to empty of wealth, resources, or the like; as, to drain a country of its specie.
 Sinking waters, the firm land to drain,
 Filled the capacious deep and formed the main.   --Roscommon.
 3. To filter.
    Salt water, drained through twenty vessels of earth, hath become fresh.   --Bacon.


 Drain, v. i.
 1. To flow gradually; as, the water of low ground drains off.
 2. To become emptied of liquor by flowing or dropping; as, let the vessel stand and drain.


 Drain, n.
 1. The act of draining, or of drawing off; gradual and continuous outflow or withdrawal; as, the drain of specie from a country; the project is a drain on resources.
 2. That means of which anything is drained; a channel; a trench; a water course; a sewer; a sink.
 3. pl. The grain from the mashing tub; as, brewers' drains. [Eng.]
 Box drain, Counter drain. See under Box, Counter.
 Right of drain Law, an easement or servitude by which one man has a right to convey water in pipes through or over the estate of another.

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 drain
      n 1: emptying accomplished by draining [syn: drainage]
      2: tube inserted into a body cavity (as during surgery) to
         remove unwanted material
      3: a pipe through which liquid is carried away [syn: drainpipe,
          waste pipe]
      4: a gradual depletion of energy or resources; "a drain on
         resources"; "a drain of young talent by emmigration"
      v 1: flow off gradually; "The rain water drains into this big
           vat" [syn: run out]
      2: deplete of resources; "The exercise class drains me of
         energy"
      3: empty of liquid; drain the liquid from; "We drained the oil
         tank"
      4: make weak; "Life in the camp drained him" [syn: enfeeble,
         debilitate]