Pronunciation: (hī'flī'ur), [key]
1. a person who is extravagant or goes to extremes in aims, pretensions, opinions, etc.
2. a person or thing that flies high.
3. a stock, often speculative, whose price moves up or down widely. Also,high'-fli'er,high'fly'er,high'-fly'er.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.