boost

Etymology

Unknown. The verb is first recorded 1815; the noun, 1825. Compare Scots boost (“to move; drive off; shoo away”), bost, boast (“to threaten; scold”), Middle English boosten, bosten (“to threaten”).

noun

1. A push from behind, as to one who is endeavoring to climb.
2. Something that helps, or adds power or effectiveness; assistance.
   The controversy gave a boost to the author's sales.
3. (physics) A coordinate transformation that changes velocity.
4. (automotive engineering) A positive intake manifold pressure in cars with turbochargers or superchargers.

verb

1. (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. 2009, Richard L. Cave, Peace Keepers, page 39
2. (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.
   More flak was aimed at the Treasury's apparent lack of marketing skills, when it was argued that its idea of how to sell tickets was along the lines of "you can get two tickets for the price of two", and it lacks the sales and promotional skills of the train operating companies which are needed to boost revenue. January 12 2022, Tom Allett, “Network News: MPs concerned at Treasury's influence on rail industry”, in RAIL, number 948, page 13
   “ A god of blues . Have you got them , Doctor ? " " Boost him sir , boost him . “ ” “ He thinks ! Shall we let him ponder ? ” “ He only calls . What have you , Doctor ? Three ducks , ' tis yours . The Doctor pulls the wad without a ... 1910, The Gopher: Annual Publication of the Student Body of the University of Minnesota, volume 24, University of Minnesota, →OCLC, page 228
3. (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. 1978, Harold J. Vetter, Ira J. Silverman, The Nature of Crime, page 296
4. (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. 1980, Popular Mechanics, volume 154, number 4, page 152
   If I want to use the charged Montana battery to boost my old Summit where do I connect the negative cable on the good battery of the Montana? 2004, Doug Mitchell, “how to connect for boost?”, in alt.autos.gm (Usenet)
   Virtue is therefore like boosting one car battery from another: you want to connect positive to positive and negative to negative. 2010, Thomas Hurka, The Best Things in Life: A Guide to What Really Matters, page 121
5. (transitive, medicine) To give a booster shot to.
6. (transitive, engineering) To amplify; to signal boost.