Source : Webster's Revised Unabridged Dictionary (1913)

   {Cylinder face} (Steam Engine), the flat part of a steam
      cylinder on which a slide valve moves.

   {Face of an anvil}, its flat upper surface.

   {Face of a bastion} (Fort.), the part between the salient and
      the shoulder angle.

   {Face of coal} (Mining), the principal cleavage plane, at
      right angles to the stratification.

   {Face of a gun}, the surface of metal at the muzzle.

   {Face of a place} (Fort.), the front comprehended between the
      flanked angles of two neighboring bastions. --Wilhelm.

   {Face of a square} (Mil.), one of the sides of a battalion
      when formed in a square.

   {Face of a} {watch, clock, compass, card etc.}, the dial or
      graduated surface on which a pointer indicates the time of
      day, point of the compass, etc.

   {Face to face}.
       (a) In the presence of each other; as, to bring the
           accuser and the accused face to face.
       (b) Without the interposition of any body or substance.
           ``Now we see through a glass darkly; but then face to
           face.'' 1 --Cor. xiii. 12.
       (c) With the faces or finished surfaces turned inward or
           toward one another; vis [`a] vis; -- opposed to {back
           to back}.

   {To fly in the face of}, to defy; to brave; to withstand.

   {To make a face}, to distort the countenance; to make a
      grimace. --Shak.

Fly \Fly\ (fl[imac]), v. i. [imp. {Flew} (fl[=u]); p. p. {Flown}
   (fl[=o]n); p. pr. & vb. n. {Flying}.] [OE. fleen, fleen,
   fleyen, flegen, AS. fle['o]gan; akin to D. vliegen, OHG.
   fliogan, G. fliegen, Icel. flj[=u]ga, Sw. flyga, Dan. flyve,
   Goth. us-flaugjan to cause to fly away, blow about, and perh.
   to L. pluma feather, E. plume. [root]84. Cf. {Fledge},
   {Flight}, {Flock} of animals.]
   1. To move in or pass thorugh the air with wings, as a bird.

   2. To move through the air or before the wind; esp., to pass
      or be driven rapidly through the air by any impulse.

   3. To float, wave, or rise in the air, as sparks or a flag.

            Man is born unto trouble, as the sparks fly upward.
                                                  --Job v. 7.

   4. To move or pass swiftly; to hasten away; to circulate
      rapidly; as, a ship flies on the deep; a top flies around;
      rumor flies.

            Fly, envious Time, till thou run out thy race.
                                                  --Milton.

            The dark waves murmured as the ships flew on.
                                                  --Bryant.

   5. To run from danger; to attempt to escape; to flee; as, an
      enemy or a coward flies. See Note under {Flee}.

            Fly, ere evil intercept thy flight.   --Milton.

            Whither shall I fly to escape their hands ? --Shak.

   6. To move suddenly, or with violence; to do an act suddenly
      or swiftly; -- usually with a qualifying word; as, a door
      flies open; a bomb flies apart.

   {To fly about} (Naut.), to change frequently in a short time;
      -- said of the wind.

   {To fly around}, to move about in haste. [Colloq.]

   {To fly at}, to spring toward; to rush on; to attack
      suddenly.

   {To fly in the face of}, to insult; to assail; to set at
      defiance; to oppose with violence; to act in direct
      opposition to; to resist.

   {To fly off}, to separate, or become detached suddenly; to
      revolt.

   {To fly on}, to attack.

   {To fly open}, to open suddenly, or with violence.

   {To fly out}.
      (a) To rush out.
      (b) To burst into a passion; to break out into license.

   {To let fly}.
      (a) To throw or drive with violence; to discharge. ``A man
          lets fly his arrow without taking any aim.''
          --Addison.
      (b) (Naut.) To let go suddenly and entirely; as, to let
          fly the sheets.