big; large; great; vast; high in scale or intensity; (of a person) old; adult

(geology) rock; mineral aggregate that makes up the earth's crust

(bound form) any of several broad-leaved trees including the Chinese parasol tree 梧桐 wú​tóng, the empress tree 泡桐 pāo​tóng, and the tung oil tree 油桐 yóu​tóng