1A North American tree or shrub related to the horse chestnut, with showy yellow, red, or white flowers.
- ‘It sickens nearly two dozen other hosts that range from California buckeye, bay laurel, and bigleaf maple to redwood, some rhododendrons, and even certain blueberry cultivars.’
- ‘Other woody plants include fragrant sumac, evergreen sumac, little walnut, Mexican buckeye, Texas persimmon, Texas snowbell, and western white honeysuckle.’
- ‘Other less prominent tree types included various hickories, other ash species, white oak, black walnut, butternut, basswood, yellow buckeye, elm, black cherry, black gum, and tulip tree.’
- ‘Beneath these grow red buckeye, whose clusters of bright red flowers enliven the forest in early spring.’
- ‘White ash, buckeye, shellbark hickory, honey locust, black cherry, and red and yellow oak claimed slightly better drained land, threaded by enormous tangles of grapevine and poison ivy.’
2An orange and brown New World butterfly with conspicuous eyespots on the wings.
- ‘Most people's attitudes toward caterpillars are based on this sort of lowly image and range from distaste (for, say, large hornworms munching on tomatoes in the garden) to indifference (toward, say, buckeye larvae chomping on weeds).’
- ‘He worked with the buckeye butterfly, which has bold bull's-eye spots on its fore and hind wings.’
- ‘Many lepidopteran species (particularly specialists, such as the buckeye butterfly, which concentrates on species in the family Scrophulariaceae) oviposit directly on the desired host plant due to limited mobility of the larvae.’
- ‘Gulf fritillaries, buckeyes, and monarchs travel through the greenway on their annual trip to their winter grounds in Mexico.’
- ‘Variegated fritillary and common buckeye butterflies that the researchers captured, marked, and released in the central patch proved two to four times as likely to show up in connected patches as in unconnected ones.’
3US informal A native of the state of Ohio.
- ‘Hocking H. Hunter, Supreme Judge, was a Buckeye by birth and education. He was born at Lancaster, August 23, 1801, and died at his residence in that city, February 4, 1872.’
- ‘Since I was born in Ohio and always lived in this state, I am a native "buckeye". Yes, I am avid fan of the Ohio State football team and like to watch their games on television.’
- ‘If you recall, I am an OH Buckeye born and raised, and so are three of my children.’
- ‘He is a native Buckeye and began his career in law enforcement with the United States Army. He served as a Military Police Officer from 1968 to 1971.’
- ‘Our Richard Quest is in that lynchpin state trying to determine precisely what a Buckeye is.’
4A kind of automatic coupling for railroad rolling stock.
- ‘In 1969 it was fitted with a warning bell, cowcatcher, and buckeye couplings before travelling to the US and Canada.’
- ‘The buckeye coupling can be clearly seen on the ‘inner’ end of the wagon.’
- ‘They have all welded steel construction of the bodies, Pullman gangways and buckeye couplings.’
- ‘After arrival, the buckeye couplings were replaced with screw couplings.’
- ‘The conclusion reached was that the use of screw couplings between coaches was inadvisable, and buckeye couplings should be used for push-pull operation.’