What is the defonion of a fairy tale

A fairy tale is a type of short story that typically features folkloric fantasy characters, such as dwarves, dragons, elves, fairies, giants, gnomes, goblins, griffins, mermaids, talking animals, trolls, unicorns, or witches, and usually magic or enchantments.

Definition of fairy tale
1
a : a story (as for children) involving fantastic forces and beings (such as fairies, wizards, and goblins) enjoyed the fairy tale “The Little Mermaid” —called also fairy story
b : a story in which improbable events lead to a happy ending
those balletic fairy tales in which a new corps member steps in for an injured principal at the last minute and delivers a splendid performance — Margaret Willis
2
: a made-up story usually designed to mislead
an old-fashioned fairy tale depicting revolutionists as demigods — Jonathan Zimmerman