Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various cosmopolitan herbaceous plants of the genus Tribulus, especially T. terrestris, which has opposite, compound leaves and spiny fruit, and is used as a dietary supplement primarily for its perceived ability to enhance sexual desire and muscle mass.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[From the fact that the fruit can puncture tires.]
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