Webster's 1913 Dictionary
HIPPOCRENE
Hip "po *crene, n. Etym: [L., fr. Gr.
Defn: A fountain on Mount Helicon in Boeotia, fabled to have burst forth when the ground was struck by the hoof of Pegasus. Also, its waters, which were supposed to impart poetic inspiration. Keats. Nor maddening draughts of Hippocrene. Longfellow.
New American Oxford Dictionary
Hippocrene
Hip po crene |ˈhipəˌkrēn, ˌhipəˈkrēnē ˈhɪpəˌkrin | ▶noun literary used to refer to poetic or literary inspiration. ORIGIN early 17th cent.: via Latin from Greek Hippokrēnē, Hippou krēnē, literally ‘fountain of the horse ’ (from hippos ‘horse ’ + krēnē ‘fountain ’), the name of a fountain on Mount Helicon sacred to the Muses, which according to legend was produced by a stroke of Pegasus' hoof.
Oxford Dictionary
Hippocrene
Hippocrene |ˈhɪpəkriːn | ▶noun [ mass noun ] literary used to refer to poetic or literary inspiration. ORIGIN early 17th cent.: via Latin from Greek Hippokrēnē, Hippou krēnē, literally ‘fountain of the horse ’ (from hippos ‘horse ’ + krēnē ‘fountain ’), the name of a fountain on Mount Helicon sacred to the Muses, which according to legend was produced by a stroke of Pegasus' hoof.
The Wordsmith Dictionary