cot·ton·mouth
noun/ˈkɒtnmaʊθ/
/ˈkɑːtnmaʊθ/
(also cottonmouth moccasin
/ˌkɒtnmaʊθ ˈmɒkəsɪn/
/ˌkɑːtnmaʊθ ˈmɑːkəsɪn/
, water moccasin /ˈwɔːtə mɒkəsɪn/
/ˈwɔːtər mɑːkəsɪn/
)- a poisonous snake that lives near water in the US
棉口蛇，水蝮蛇（毒蛇，生活于美国水滨）