Apple

Apple is the pomaceous fruit of the apple tree, species Malus domestica in the rose family (Rosaceae). It is one of the most widely cultivated tree fruits, and the most widely known of the many members of genus Malus that are used by humans.

History
Annabeth kept a refrigerator in her bedroom that allowed her to snack a lot more than the other NoHeads. Apples were one of the snacks she consumed commonly.