二叉树 Traditional form: 二叉樹 Pinyin (reading): èrchāshù Definitions: binary tree Characters: 二 - two; twice 叉 - fork; prong; cross, intersect 树 - tree; to plant; to set up, to establish Traditional characters: 二 - two; twice 叉 - fork; prong; cross, intersect 樹 - tree; to plant; to set up, to establish