1.Definition: a hard black form of lignite that takes a brilliant polish and is used in jewelry or ornamentation

Category: General

2.Definition: an airplane powered by one or more jet engines

Category: Objects

3.Definition: an artificially produced flow of water

Related Noun(s):fountain

Category: Objects

4.Definition: atmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upward

Category: General

5.Definition: street names for ketamine

Related Noun(s):green

Category: Objects

6.Definition: the occurrence of a sudden discharge (as of liquid)

Related Noun(s):spirt, spurt, squirt

Category: General