A troublesome fellow or thing; a blighter.
A valve designed to release a small amount of excess pressure from a system.
A person who is easily made to bleed, or who bleeds in unusually large amounts, particularly a hemophiliac.
A blood vessel that requires cauterization etc. to stop it from bleeding during surgery.
Synonym of scratch hit
Anything that saps a resource produced by something else.
One who misbehaves.