noun

• (military) A sudden attack; an onslaught.
• (video games) The strategy of attacking an opponent with a large swarm of weak units, rather than spending time developing their abilities.
• (contact sports) The act of running at another player to block or disrupt play.
  "a rush on the quarterback"
• (American football, dated) A rusher; a lineman.
  "the center rush, whose place is in the center of the rush line"

verb

• (transitive or intransitive) To hurry; to perform a task with great haste, often not properly or without thinking carefully.
  "rush one's dinner; rush off an email response"
• (intransitive) To flow or move forward rapidly or noisily.
  "armies rush to battle; waters rush down a precipice."
• (intransitive, soccer) To dribble rapidly.
• (transitive or intransitive, contact sports) To run directly at another player in order to block or disrupt play.

name

• (computing) A dialect of the programming language PL/I.