Pronunciation: (pē'lē-un; Gk. pē'lē-ôn), [key]
1. Mount, a mountain near the E coast of Greece, in Thessaly. 5252 ft. (1600 m).
2. pile( or heap)Pelion on Ossa,
a. to make matters worse; aggravate or compound a situation.
b. to engage in vain or futile efforts.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.