bar·rel /ˈbærəl/
 桶,大琵琶桶;一桶的量;圓筒,槍管;大量
 barrel
 筒
 barrel
 桶
 Bar·rel v. t. [imp. & p. p. Barreled or Barrelled; p. pr. & vb. n. Barreling, or Barrelling.] To put or to pack in a barrel or barrels.
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 Bar·rel n.
 1. A round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads; as, a cracker barrel.  Sometimes applied to a similar cylindrical container made of metal, usually called a drum.
 2. The quantity which constitutes a full barrel.  This varies for different articles and also in different places for the same article, being regulated by custom or by law.  A barrel of wine is 31½ gallons; a barrel of flour is 196 pounds.
 3. A solid drum, or a hollow cylinder or case; as, the barrel of a windlass; the barrel of a watch, within which the spring is coiled.
 4. A metallic tube, as of a gun, from which a projectile is discharged.
 5. A jar. [Obs.]
 6. Zool. The hollow basal part of a feather.
 Barrel bulk Com., a measure equal to five cubic feet, used in estimating capacity, as of a vessel for freight.
 Barrel drain Arch., a drain in the form of a cylindrical tube.
 Barrel of a boiler, the cylindrical part of a boiler, containing the flues.
 Barrel of the ear Anat., the tympanum, or tympanic cavity.
 Barrel organ, an instrument for producing music by the action of a revolving cylinder.
 Barrel vault. See under Vault.
 barrel
      n 1: a tube through which a bullet travels when a gun is fired
           [syn: gun barrel]
      2: a cylindrical container that holds liquids [syn: cask]
      3: a bulging cylindrical shape; hollow with flat ends [syn: drum]
      4: the quantity that a barrel (of any size) will hold [syn: barrelful]
      5: any of various units of capacity; "a barrel of beer is 31
         gallons and a barrel of oil is 42 gallons" [syn: bbl]
      v : put in barrels
      [also: barrelling, barrelled]
 Barrel
    a vessel used for keeping flour (1 Kings 17:12, 14, 16). The
    same word (cad) so rendered is also translated "pitcher," a
    vessel for carrying water (Gen. 24:14; Judg. 7:16).