The Collaborative International Dictionary of English v.0.48:

Peziza \Pe*zi"za\, prop. n. [NL., corrupt. from L. pezica a
   sessile mushroom, fr. Gr. pe`zis, fr. pe`za, poy`s, a foot.]
   (Bot.)
   A genus of fungi embracing a great number of species, some of
   which are remarkable for their regular cuplike form and deep
   colors.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Peziza
    n 1: type genus of the Pezizaceae: a variety of cup fungus [syn:
         Peziza, genus Peziza]