(made of) a kind of hard, black, highly polished mineral; fast, strong stream (of gas, liquid, steam or flame) forced out of a small opening
black
Cases of word usage
1) a thin stream (of liquid, powder etc); an unimportant, nasty person; to force (liquid, powder etc) onto (a person, thing) in a thin stream or jet (squirt)
2) to push or put (something) suddenly and with force; the force in a jet engine that moves a plane; pressure by one part of a structure on another (thrust)
