noun

• A North American rattlesnake, Crotalus cerastes, that inhabits lowland deserts.
• (slang) A person who is untrustworthy and dangerous.
• (slang, dated) A heavy swinging blow from the side which disables an adversary.
• (baseball, colloquial) A pitcher who throws sidearm.
• A type of middle-distance deep-sea trawler widely used during the 1960s and 1970s.