The Collaborative International Dictionary of English v.0.48:
Epistaxis \Ep`i*stax"is\, n. [NL., fr. Gr. 'epi` upon + ? to drop.] (Med.) Bleeding at the nose. [1913 Webster] epistemicWordNet (r) 3.0 (2006):
epistaxis n 1: bleeding from the nose [syn: nosebleed, epistaxis]