from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various deciduous shrubs or small trees of the genus Staphylea, native to north temperate regions and having opposite compound leaves and terminal panicles of white flowers and bladderlike fruits.
- n. The fruit of such a plant.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. any of several species of large shrubs or small trees, of the genus Staphylea, in the family Staphyleaceae
bladder + nut (Wiktionary)