as the crow flies
 成直線地,走捷徑地
 Crow, n.
 1. Zool. A bird, usually black, of the genus Corvus, having a strong conical beak, with projecting bristles.  It has a harsh, croaking note. See Caw.
 Note: ☞ The common crow of Europe, or carrion crow, is Corvus corone.  The common American crow is Corvus Americanus. See Carrion crow, and Illustr., under Carrion.
 2. A bar of iron with a beak, crook, or claw; a bar of iron used as a lever; a crowbar.
 Get me an iron crow, and bring it straight
 Unto my cell.   --Shak.
 3. The cry of the cock. See Crow, v. i., 1.
 4. The mesentery of a beast; -- so called by butchers.
 Carrion crow. See under Carrion.
 Crow blackbird Zool., an American bird (Quiscalus quiscula); -- called also purple grackle.
 Crow pheasant Zool., an Indian cuckoo; the common coucal. It is believed by the natives to give omens. See Coucal.
 Crow shrike Zool., any bird of the genera Gymnorhina, Craticus, or Strepera, mostly from Australia.
 Red-legged crow. See Crough.
 As the crow flies, in a direct line.
 To pick a crow, To pluck a crow, to state and adjust a difference or grievance (with any one).
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 as the crow flies
      adv : by the shortest and most direct route; "it's 10 miles as the
            crow flies"