Definition of cottonmouth in English:


Line breaks: cotton|mouth
Pronunciation: /ˈkɒt(ə)nməʊθ
(also cottonmouth moccasin)


  • A large, dangerous semiaquatic pit viper which inhabits lowland swamps and waterways of the south-eastern US. When threatening it opens its mouth wide to display the white interior. Also called water moccasin.
    • Agkistrodon piscivorus, family Viperidae
    More example sentences
    • Dogs bitten by any of Texas' dangerous snakes, including rattlesnakes, cottonmouths, copperheads and coral snakes, often suffer unnecessarily.
    • It's because of birds that I know the difference between a sugar maple and a red maple, a diamondback water snake and a cottonmouth, an American lady and a painted lady.
    • This is the only product that can neutralize toxins from rattlesnakes, cottonmouths, and copperheads.

More definitions of cottonmouth

Definition of cottonmouth in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody