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

Heat waves are increasing in temperature, frequency and duration, pushing native species like rattlesnakes to their biological limit. —John Leos, AZCentral.com, 3 Sep. 2025

However, gopher snakes tend to be a bit bigger than rattlesnakes — typically measuring up to 8 feet in length. —Sacbee.com, 28 Aug. 2025

According to Barrios, 18 types of snakes are found in the Bay Area; only the rattlesnake is dangerous to humans. —Tina Chen, Mercury News, 22 Aug. 2025

The rattlesnake named Gertrude, or Gertie, took shelter in the opening of a drainpipe earlier this summer and gave birth around late July or early August at the University of Michigan’s Matthaei Botanical Gardens, the Detroit Free Press previously reported. —Darcie Moran, Freep.com, 20 Aug. 2025

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