verb (used with object)
- to lift or raise by pushing from behind or below.
- to advance or aid by speaking well of; promote: She always boosts her hometown.
- to increase; raise: to boost prices; to boost the horsepower of the car by 20 percent.
- Slang. to steal, especially to shoplift: Two typewriters were boosted from the office last night.
verb (used without object)
- Slang. to engage in stealing, especially shoplifting.
- an upward shove or raise; lift.
- an increase; rise: There’s been a tremendous boost in food prices.
- an act, remark, or the like, that helps one’s progress, morale, efforts, etc.: His pep talk was the boost our team needed.
- encouragement, improvement, or helpa boost to morale
- an upward thrust or pushhe gave him a boost over the wall
- an increase or risea boost in salary
- a publicity campaign; promotion
- the amount by which the induction pressure of a supercharged internal-combustion engine exceeds that of the ambient pressure
- to encourage, assist, or improveto boost morale
- to lift by giving a push from below or behind
- to increase or raiseto boost the voltage in an electrical circuit
- to cause to rise; increaseto 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
1815, literal and figurative, American English, of unknown origin. Related: Boosted; boosting. As a noun by 1825.
- A linear map from one reference frame to another in which each coordinate is increased or decreased by an independent constant or linear function. A boost corresponds to a shift of the entire coordinate system without any rotation of its axes.