noun

• (informal) An attempt.
  "I'll give this thankless task a stab."
• (music) A single staccato chord that adds dramatic impact to a composition.
  "a horn stab"

verb

• (transitive) To pierce or to wound (somebody) with a (usually pointed) tool or weapon, especially a knife or dagger.
  "If you stab him in the heart he won't live long enough to retaliate."
• (transitive) To thrust in a stabbing motion.
  "to stab a dagger into a person"
• (intransitive) To recklessly hit with the tip of a (usually pointed) object, such as a weapon or finger (often used with at).
  "He stabbed at my face with the twig but luckily kept missing my eyes."
• (intransitive) To cause a sharp, painful sensation (often used with at).
  "The snow from the blizzard was stabbing at my face as I skied down the mountain."

noun

• (aviation, slang) The horizontal or vertical stabilizer of an aircraft.
  "If the pilots used electric pitch trim, it would only pause MCAS for 5s; to deactivate it you have to switch off the STAB TRIM CUTOUT switches."

adj

• (industrial relations) Clipping of established.
  "Do you know whether any country offices pay their men by the thousand, or whether they are on stab wages? — I do not know. Some are paid stab wages, but I do not know whether there is much piece-work."