The Collaborative International Dictionary of English v.0.48:

Jet \Jet\, n.
   Same as 2d Get. [Obs.] --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Jet \Jet\, n. [OF. jet, jayet, F. ja["i]et, jais, L. gagates,
   fr. Gr. ?; -- so called from ? or ?, a town and river in
   Lycia.] [written also jeat, jayet.] (Min.)
   A variety of lignite, of a very compact texture and velvet
   black color, susceptible of a good polish, and often wrought
   into mourning jewelry, toys, buttons, etc. Formerly called
   also black amber.
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   Jet ant (Zool.), a blackish European ant (Formica
      fuliginosa), which builds its nest of a paperlike
      material in the trunks of trees.
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The Collaborative International Dictionary of English v.0.48:

Jet \Jet\, n. [F. jet, OF. get, giet, L. jactus a throwing, a
   throw, fr. jacere to throw. Cf. Abject, Ejaculate,
   Gist, Jess, Jut.]
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   1. A shooting forth; a spouting; a spurt; a sudden rush or
      gush, as of water from a pipe, or of flame from an
      orifice; also, that which issues in a jet.
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   2. Drift; scope; range, as of an argument. [Obs.]
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   3. The sprue of a type, which is broken from it when the type
      is cold. --Knight.
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   Jet propeller (Naut.), a device for propelling vessels by
      means of a forcible jet of water ejected from the vessel,
      as by a centrifugal pump.

   Jet pump, a device in which a small jet of steam, air,
      water, or other fluid, in rapid motion, lifts or otherwise
      moves, by its impulse, a larger quantity of the fluid with
      which it mingles.
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The Collaborative International Dictionary of English v.0.48:

Jet \Jet\, v. i. [imp. & p. p. Jetted; p. pr. & vb. n.
   Jetting.] [F. jeter, L. jactare, freq. fr. jacere to throw.
   See 3d Jet, and cf. Jut.]
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   1. To strut; to walk with a lofty or haughty gait; to be
      insolent; to obtrude. [Obs.]
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            he jets under his advanced plumes!    --Shak.
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            To jet upon a prince's right.         --Shak.
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   2. To jerk; to jolt; to be shaken. [Obs.] --Wiseman.
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   3. To shoot forward or out; to project; to jut out.
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The Collaborative International Dictionary of English v.0.48:

Jet \Jet\, v. t.
   To spout; to emit in a stream or jet.
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         A dozen angry models jetted steam.       --Tennyson.
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WordNet (r) 3.0 (2006):

jet
    adj 1: of the blackest black; similar to the color of jet or
           coal [syn: coal-black, jet, jet-black, pitchy,
           sooty]
    n 1: an airplane powered by one or more jet engines [syn: jet,
         jet plane, jet-propelled plane]
    2: the occurrence of a sudden discharge (as of liquid) [syn:
       jet, squirt, spurt, spirt]
    3: a hard black form of lignite that takes a brilliant polish
       and is used in jewelry or ornamentation
    4: atmospheric discharges (lasting 10 msec) bursting from the
       tops of giant storm clouds in blue cones that widen as they
       flash upward [syn: jet, blue jet, reverse lightning]
    5: street names for ketamine [syn: K, jet, super acid,
       special K, honey oil, green, cat valium, super C]
    6: an artificially produced flow of water [syn: fountain,
       jet]
    v 1: issue in a jet; come out in a jet; stream or spring forth;
         "Water jetted forth"; "flames were jetting out of the
         building" [syn: jet, gush]
    2: fly a jet plane