1. An artificially produced flow of water
   "Children played in the fountain's cooling jets";
   - fountain
    
2. The occurrence of a sudden discharge (as of liquid)
   "A jet of water from the broken pipe soaked his shoes";
   - squirt, spurt, spirt [archaic]
    
3. An aeroplane powered by one or more jet engines
   "The jet plane crossed the Atlantic in just a few hours"; "The jet-propelled plane crossed the Atlantic in record time";
   - jet plane, jet-propelled plane
    
4. A hard black form of lignite that takes a brilliant polish and is used in jewellery or ornamentation
   "The Victorian mourning jewellery was made of polished jet"
    
5. Atmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upward
   "Scientists captured images of blue jets during a thunderstorm";
   - blue jet, reverse lightning

1. (air travel) fly a jet plane
   "The pilot jetted across the Atlantic in record time"

1. Of the blackest black; similar to the colour of jet or coal
   "Her jet eyes were piercing";
   - coal-black, jet-black, pitchy, sooty

Derived forms: jetted, jetting, jets

See also: achromatic, neutral

Type of: aeroplane [Brit], airplane [N. Amer], atmospheric electricity, aviate, brown coal, discharge, flow, flowing, fly, lignite, outpouring, pilot, plane, run, wood coal

Encyclopedia: Jet, OK