◎ 表叔 biǎoshū
[son of one's grandfather's sister,or son of one's grandmother's sister or brother] 姑奶奶的儿子或姨奶奶或姨祖父的儿子叫表叔

1.son of one's grandfather's sister; son of one's grandmother's sister or brother; one's father's younger male cousin

称父之表弟。《儒林外史》第三三回：“﹝ 杜少卿 ﹞到了 仓巷 里外祖 卢 家，表侄 卢华士 出来迎请表叔进去。” 洪深 《劫后桃花》八：“从前的事不必说它，我也不敢再寻表叔了。”