I think INaturalist app had a few American Chestnuts in the area (with blight noted on the comments)… but thought chestnuts were spiky/hairy shells. What are these guys?
Edible when roasted?
              
              
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            Those look like horse chestnuts. It is inedible but can be used for a game called conkers
If not horsechestnuts they are buckeyes I think
              
              
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            Buckeyes/horsechestnuts; generally considered to be non-edible, and some references label them as poisonous.  But… something eats them… old-timer nutgrower related tales of a family he grew up with who ate buckeyes with impunity.  When folks confronted them with claims of toxcity, they said, "Fine; you don’t eat them… that leaves more for us.
I still have no intention of eating them - but I did have a batch tested by my toxicologist friend, for ‘aesculin’, the supposed toxic alkaloid… with none detected.
Bottom nut in first photo is a black walnut.
              
              
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