"Fairies: mythical creatures. A fairy is a type of mythical being or legendary creature in European folklore, a kind of spirit often described as metaphysical, supernatural or preternatural." I found this snippet here.
I have a dear friend who occasionally says, "Ah, don't mind me, I'm away with the fairies". Like me she is from over the pond. Liking the expression, I had an idea what it meant, had heard it before but I looked the meaning up. It means to be in a daydream, sometimes to be deep in thought and having one's gaze unfocused while staring at nothing in particular.
The following is
A Fairy Song
Poem by William Shakespear
Over hill, over dale,
Thorough bush, thorough brier,
Thorough food, thorough fire!
I do wander everywhere,
Swifter than the moon's sphere;
And I serve the Fairy Queen,
To dew her orbs upon the green;
The cowslips tall her pensioners be;
In their gold coats spots you see;
Those be rubies, fairy favours;
In those freckles live their savours;
I must go seek some dewdrops here,
And hang a pearl in every cowslip's ear.
Spread your wings and let the fairy in you fly.
The wall is silence, the grass is sleep,
Tall trees of peace their vigil keep,
And the Fairy of Dreams with moth-wings furled
Plays soft on her flute to the drowsy world.
~Ida Rentoul Outhwaite~