凹朴皮 āopòpí tulip tree bark Origin Definitions Defs Strokes Stroke Words Sentences Sents 凹 āo adjectivenoun concave concave; sunken; dented; low-lying朴 pò hackberry (bound form) the Chinese hackberry tree, such as in 朴树 pòshù; also refers to the thick bark of some trees皮 pí noun skin; leather skin, fur, or hide of humans or animals; leather; peel or bark of plants