noun

• (physics) A coordinate transformation that changes velocity.
• (automotive engineering, uncountable) A positive intake manifold pressure in cars with turbochargers or superchargers.

verb

• (transitive) To lift or push from behind (one who is endeavoring to climb); to push up.
  "Gaddis found that with his broken arm, he couldn't climb the wall. Josh grabbed his foot and boosted him up."
• (transitive, by extension) To help or encourage (something) to increase or improve; to assist in overcoming obstacles.
  "This campaign will boost your chances of winning the election."
• (slang, transitive) To steal.
  "It is not at all unusual or suspicious for a woman to spend a good deal of the day out shopping, and feminine clothing styles often make it relatively easy for a female shoplifter to conceal "boosted" merchandise on her person."
• (Canada, transitive) To jump-start a vehicle by using cables to connect the battery in a running vehicle to the battery in a vehicle that won't start.
  "It's easy to boost a dead battery, but this can be dangerous if it's done the wrong way."