The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

   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.
          [1913 Webster]

WordNet (r) 3.0 (2006):

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

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "nozzle":
   aerosol, antlia, aspergil, aspergillum, atomizer, beak, beezer,
   bib nozzle, bill, bugle, clyster, concentrate sprayer, conk,
   douche, enema, fountain syringe, mist concentrate sprayer, muffle,
   muzzle, nares, neb, needle bath, nib, nose, nostrils,
   olfactory organ, pecker, pressure nozzle, proboscis, rhinarium,
   rose, rosehead, rostrum, schnozzle, shower, shower bath,
   shower head, smeller, snoot, snout, sparge, sparger, spray,
   spray can, spray nozzle, sprayer, sprinkler, sprinkler head,
   sprinkling system, syringe, trunk, watercart, watering can,
   watering pot