a fairy-tale character who uses magical powers to help a hero or heroine.
British Dictionary definitions for fairy godmother
fairy godmother
noun
1.
a character in certain fairy stories who brings unexpected benefits to the hero or heroine
2.
any benefactress, esp an unknown one
Slang definitions & phrases for fairy godmother
fairy godmother
noun phrase
A male homosexual's homosexual initiator and tutor (1970s+ Homosexuals)
Idioms and Phrases with fairy godmother
fairy godmother
A generous benefactor, as in An anonymous fairy godmother donated the money for the new organ. This expression alludes to a stock character in fairy tales such as Cinderella, who gives unexpected and much needed assistance. [ Late 1800s ]