SHOOT UP

{v.} 1. To grow quickly. * /Billy had always been a small boy, but when he was thirteen years old he began to shoot up./ 2. To arise suddenly. * /As we watched, flames shot up from the roof of the barn./ 3. {informal} To shoot or shoot at recklessly; shoot and hurt badly. * /The cowboys got drunk and shot up the bar room./ * /The soldier was shot up very badly./ 4. To take drugs by injection. * /A heroin addict will shoot up as often as he can./