Pronunciation: (on'u-stē), [key]
1. the quality or fact of being honest; uprightness and fairness.
2. truthfulness, sincerity, or frankness.
3. freedom from deceit or fraud.
4. Bot.a plant, Lunaria annua, of the mustard family, having clusters of purple flowers and semitransparent, satiny pods.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.