1. a venomous snake with a rattle at the end of its tail that makes a warning sound when shaken

Examples

• The hiker heard the distinctive sound of a rattlesnake's warning.
• Rattlesnakes are found throughout much of North and South America.
• The diamondback rattlesnake is one of the most dangerous species.
• She carefully backed away when she spotted the coiled rattlesnake.
• The zoo's reptile exhibit features several species of rattlesnakes.
• Rattlesnakes use their rattle to warn potential threats to stay away.