insubstantial / impractical

A figure of modern myth said to give children a small amount of money (or sometimes a present) in exchange for a milk tooth when it falls out of a child's mouth.

A magical powder that would give the power of flight to whoever it was sprinkled on. / (by extension) Any apparently magical ingredient or effect. / (slang) The drug phencyclidine.

plural of fairy-wren

Any of certain small, insectivorous Australian birds, incorporating fourteen members of the family Maluridae.

(Australia, New Zealand) A snack made of buttered bread sprinkled with hundreds and thousands.

(Australia) The little penguin, Eudyptula minor.

Synonym of fairy ring / A circular patch barren of vegetation, often encircled by a ring of stimulated grass growth, typically found in regions of arid grassland.

The remains of a ringfort or other circular dwelling, superstitiously said to be associated with fairies or leprechauns.

plural of fairy ring