桐梓 tóngzǐ Tongzi Origin Definitions Defs Strokes Stroke Words Sentences Sents 桐 tóng tong tree (bound form) any of several broad-leaved trees including the Chinese parasol tree 梧桐 wútóng, the empress tree 泡桐 pāotóng, and the tung oil tree 油桐 yóutóng梓 zǐ Chinese catalpa (bound form) the Chinese catalpa (Catalpa ovata), a deciduous tree with light, durable wood