Definition from Wiktionary, the free dictionary
buckeye (plural buckeyes)
- Any of several species of trees of the genus Aesculus.
- Any of several species of the related Mexican buckeye, (genus Ungnadia).
- The seed or fruit of these plants.
- (US, slang) A native or resident of the American state of Ohio.
tree of the genus Aesculus
tree of the genus Ungnadia
resident of the American State of Ohio