turtle
/ˈtɜ:tl; `tətl/ n
1 large reptile that lives in the sea and has flippers and a large horny shell 海龟.
2 (US) any of various types of reptile with a large shell, eg a tortoise, terrapin, etc （任何种类的）龟（如陆龟、 水龟等）. =>illus at tortoise 见tortoise插图.
3 (idm 习语) turn `turtle (infml 口) (of a boat) turn upside down; capsize （指船）倾覆, 翻.