榆木 yúmù elm Origin Definitions Defs Strokes Stroke Words Sentences Sents 榆木脑壳 yúmùnǎoké blockhead a blockhead; a thickheaded person榆木脑袋 yúmùnǎodai blockhead a person who is dim-witted, stubborn, or slow to understand; a thickhead or thick-skulled individual