(1):
(a.) Of or pertaining to Parnassus.
(2):
(n.) Any one of numerous species of butterflies belonging to the genus Parnassius. They inhabit the mountains, both in the Old World and in America.
(3):
(n.) One of a school of French poets of the Second Empire (1852-70) who emphasized metrical form and made the little use of emotion as poetic material; - so called from the name (Parnasse contemporain) of the volume in which their first poems were collected in 1866.