What is "to fly out"

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 through 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.

   1. To rush out.

   2. To burst into a passion; to break out into license. To let fly.

      1. To throw or drive with violence; to discharge. ``A man lets fly his arrow without taking any aim.''
         --Addison.

      2. (Naut.) To let go suddenly and entirely; as, to let fly the sheets.