urban legend

US /ˌɝː.bən ˈledʒ.ənd/
UK /ˌɝː.bən ˈledʒ.ənd/
"urban legend" picture
1.

都市传说, 城市传奇

a humorous or horrific story or piece of information circulated as though true, especially one that is widely disseminated orally.

:
The story about alligators in the sewers is a classic urban legend.
关于下水道里有鳄鱼的故事是一个经典的都市传说
Many people still believe that urban legend about the vanishing hitchhiker.
许多人仍然相信那个关于消失的搭便车者的都市传说