Par*nas"sus (?), n. [L., fr. Gr. .] Anc. Geog. & Gr. Myth.
A mountain in Greece, sacred to Apollo and the Muses, and famous for a temple of Apollo and for the Castalian spring.
Grass of Parnassus. Bot. See under Grass, and Parnassia. -- To climb Parnassus, to write poetry. [Colloq.]
© Webster 1913.