Source : Webster's Revised Unabridged Dictionary (1913)

Nozzle \Noz"zle\, n. [A dim. of nose. [root]261] [Written also
   {nosle}.]
   1. The nose; the snout; hence, the projecting vent of
      anything; as, the nozzle of a bellows.

   2. Specifically:
      (a) A short tube, usually tapering, forming the vent of a
          hose or pipe.
      (b) A short outlet, or inlet, pipe projecting from the end
          or side of a hollow vessel, as a steam-engine cylinder
          or a steam boiler.

Source : WordNet®

nozzle
     n 1: a projecting spout from which a fluid is discharged [syn: {nose}]
     2: informal terms for the nose [syn: {beak}, {honker}, {hooter},
         {snoot}, {snout}, {schnozzle}, {schnoz}]