boost definition

1. the act of giving hope or support to someone
2. the act of giving a push
• examples: he gave her a boost over the fence
3. give a boost to; be beneficial to
• examples: The tax cut will boost the economy
4. increase or raise
• examples: boost the voltage in an electrical circuit
5. push or shove upward, as if from below or behind
• examples: The singer had to be boosted onto the stage by a special contraption