jet jet /ˈdʒɛt/

adjective

1. Of the blackest black; similar to the color of jet or coal  ( jet , jet-black , pitchy , coal-black , sooty )
   of the blackest black; similar to the color of jet or coal
   

noun

1. () An airplane powered by one or more jet engines  ( jet-propelled plane , jet plane , jet )
   an airplane powered by one or more jet engines
    He flew from New York to London on a private jet.
   He flew from New York to London on a private jet.
   
   
2. () The occurrence of a sudden discharge (as of liquid)  ( spirt , spurt , squirt , jet )
   the occurrence of a sudden discharge (as of liquid)
   
3. An artificially produced flow of water  ( fountain , jet )
   an artificially produced flow of water
   
4. Street names for ketamine  ( cat valium , green , honey oil , jet , K , special K , super acid , super C )
   street names for ketamine
   
5. Atmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upward  ( blue jet , jet , reverse lightning )
   atmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upward
   
6. A hard black form of lignite that takes a brilliant polish and is used in jewelry or ornamentation  ( jet )
   a hard black form of lignite that takes a brilliant polish and is used in jewelry or ornamentation
    The Victorian mourning brooch was made of jet, a type of black coal that is lightweight and easy to carve
   The Victorian mourning brooch was made of jet, a type of black coal that is lightweight and easy to carve
   
   

verb

1. () Issue in a jet; come out in a jet; stream or spring forth  ( gush , jet )
   issue in a jet; come out in a jet; stream or spring forth
    Water jetted forth
   Water jetted forth
    Flames were jetting out of the building
   flames were jetting out of the building
   
2. (air travel) fly a jet plane  ( jet )
   (air travel) fly a jet plane