power-up
/ˈpaʊərʌp/noun
mass noun
1- the action of switching on an electrical device, especially a computer（尤指计算机等电器的）启动。
1.1
- count noun(in a computer game) a bonus which a player can collect and which gives their character an advantage such as more strength or firepower（电脑游戏）游戏者得到的奖励分。