noun

• (aviation) A type of airplane using jet engines rather than propellers.
  "One of the other two nations to operate the F-35B, the United Kingdom, has had US versions of the jet operating off its HMS Queen Elizabeth aircraft carrier."
• (physics) A narrow cone of hadrons and other particles produced by the hadronization of a quark or gluon.
• (dated) Drift; scope; range, as of an argument.
• (printing, dated) The sprue of a type, which is broken from it when the type is cold.

verb

• (intransitive) To spray out of a container.
• (transitive) To spray with liquid from a container.
  "Farmers may either dip or jet sheep with chemicals."
• (intransitive) To travel on a jet aircraft or otherwise by jet propulsion
• (intransitive) To move (running, walking etc.) rapidly around

noun

• (mineralogy) A hard, black form of coal, sometimes used in jewellery.
  "There is also a factitious jeat made of glaſs, in imitation of the mineral jeat."

noun

• (mathematics) an operation that takes a differentiable function f and produces a polynomial, the Taylor polynomial (truncated Taylor series) of f, at each point of its domain.