Definition of "horse-chestnut" [horse•-chest•nut]

• A species of trees of the genus Aesculus as it is known in Eurasia, common in the temperate zones of both hemispheres. (noun)
• The large nutlike seed of these trees. (noun)

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• "Long shadows from the horse-chestnut tree in the front yard trail up the red-bricked walls."
• "We were seated in the garden under the shade of a horse-chestnut tree on what felt like a summer afternoon."
• "I pulled my hat lower and took a half step back under the shade of a horse-chestnut tree."