myth

US /mɪθ/
UK /mɪθ/
"myth" picture
1.

a traditional story, especially one concerning the early history of a people or explaining a natural or social phenomenon, and typically involving supernatural beings or events.

:
The ancient Greeks had many myths about their gods and goddesses.
The creation myth tells how the world began.
2.

a widely held but false belief or idea.

:
It's a common myth that sugar makes children hyperactive.
The idea that we only use 10% of our brain is a popular myth.