Definition of wild chestnut
1 a
:a proteaceous shrub (Brabejum stellatifolia) of southern Africa
b
:the nut of this plant containing a kernel that is edible when roasted
2
:a southern African tree (Calodendron capense) of the family Rutaceae with panicles of handsome white flowers for which it is sometimes cultivated;
also
:its edible black seed
3
:a Philippine tree (Castanopsis philippinensis) related to the true chestnut;
also
:the seed of this tree
