Hippocrene

In Greek mythology, Hippocrene (Ἱππου κρήνης) was the name of a fountain on Mt. Helicon. It was sacred to the Muses and was formed by the hooves of Pegasus. Its name literally translates as "Horse's Fountain" and the water was supposed to bring forth poetic inspiration when imbibed.

Hesiod refers to the horse's well on Helicon in his Theogony poem.

And after they have washed their tender skin in Permessus or Hippocrene or holy Olmeidus, they perform choral dances on highest Helicon, beautiful, lovely ones, and move nimbly with their feet.

John Keats refers to Hippocrene in his poem Ode to a Nightingale.

O for a beaker full of the warm South

Full of the true, the blushful Hippocrene,

With beaded bubbles winking at the brim,

And purple-stained mouth;

That I might drink, and leave the world unseen,

And with thee fade away into the forest dim:

Henry Wadsworth Longfellow references the fountain in his poem Goblet of Life.

No purple flowers,--no garlands green,

Conceal the goblet's shade or sheen,

Nor maddening draughts of Hippocrene,

Like gleams of sunshine, flash

between

Thick leaves of mistletoe.