WordReference Random House Learner's Dictionary of American English © 2014
boost /bust/USA pronunciation
v. [~ + object]
to lift by pushing from below:I boosted the youngster into the top of her bunk bed.
to help (someone) by speaking well of:boosted his friend as likely to win the election.
to increase; raise:to boost prices.
an upward shove or raise;
lift:gave him a little boost into his highchair.
an increase; rise: a boost in prices.
an act or remark that helps one's morale, efforts, etc.:After praise from the coach, the whole team felt a boost in morale.
Collins Concise English Dictionary © HarperCollins Publishers::
boost /buːst/ n
- encouragement, improvement, or help: a boost to morale
- an upward thrust or push
- an increase or rise
- the amount by which the induction pressure of a supercharged internal-combustion engine exceeds that of the ambient pressure
Etymology: 19th Century: of unknown origin
- to encourage, assist, or improve: to boost morale
- to lift by giving a push from below or behind
- to increase or raise: to boost the voltage in an electrical circuit
- to cause to rise; increase: to boost sales
- to advertise on a big scale
- to increase the induction pressure of (an internal-combustion engine) above that of the ambient pressure; supercharge
'boost' also found in these entries: