rattlesnake

noun

rat·​tle·​snake ˈra-tᵊl-ˌsnāk 

: any of several American pit vipers (genera Crotalus and Sistrurus) that have horny interlocking joints at the end of the tail which make a sharp rattling sound when shaken

Illustration of rattlesnake

Examples of rattlesnake in a Sentence

Recent Examples on the Web

Common venomous snakes in the state include rattlesnakes, copperheads, cottonmouths, and coral snakes, with rattlesnakes being the most common. —Tiffani Jackson, Fort Worth Star-Telegram, 28 Mar. 2026

The Southland has also seen more rattlesnakes, with two recent human fatalities, as the early heat draws more serpents onto hiking trails. —Clara Harter, Los Angeles Times, 28 Mar. 2026

Jason Magee was walking a popular trail in Mission Viejo when a familiar sight caught the corner of his eye — a rattlesnake slithering in the nearby bushes, dangerously close to a skatepark, playground and a dog park. —Laylan Connelly, Oc Register, 26 Mar. 2026

Not only is this location remote and hard to reach, but curled rattlesnakes and tarantulas lurk in nooks. —Madison Chapman, Outside, 25 Mar. 2026

Word History

First Known Use

1624, in the meaning defined above

Phrases Containing rattlesnake

• diamondback rattlesnake
• rattlesnake master
• rattlesnake plantain
• rattlesnake root
• rattlesnake weed
• timber rattlesnake

Rhymes for rattlesnake

• overtake
• shiitake
• undertake
• wapentake
• ache
• ake
• bake
• brake
• break
• cake
• craik
• crake

Kids Definition

rattlesnake

noun

rat·​tle·​snake ˈrat-ᵊl-ˌsnāk 

: any of various poisonous American snakes with a rattle at the end of the tail

Medical Definition

rattlesnake

noun

rat·​tle·​snake ˈrat-ᵊl-ˌsnāk 

: any of the American pit vipers that have a series of horny interlocking joints at the end of the tail which make a sharp rattling sound when vibrated and that comprise the genera Sistrurus and Crotalus see diamondback rattlesnake, tiger rattlesnake, timber rattlesnake