Hippocrene \Hip"po*crene\, n. [L., fr. Gr. ?; "i`ppos horse + ? a fountain.] A fountain on Mount Helicon in B[oe]otia, 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. [1913 Webster] Nor maddening draughts of Hippocrene. --Longfellow. [1913 Webster]