[buhk-ahy] 
| 1. | any of various trees or shrubs of the genus Aesculus, as A. glabra (Ohio buckeye), having palmate leaves, gray, scaly bark, and bell-shaped greenish-yellow flowers in upright clusters: the state tree of Ohio. |
| 2. | the brown nut of any of these trees. |
| 3. | (initial capital letter ) a native or inhabitant of Ohio (used as a nickname). |
| 4. | a butterfly, Precis lavinia, having dark-brown wings with purple or red eyespots. |
| Ohio buckeye n. A large shrub or tree (Aesculus glabra) of the central United States, having compound leaves and yellowish-green flowers. |