疑狱 yíyù
[lawsuit case difficult to judge] 案情不明、证据不充分、一时难于判决的案件
罪证不足,无从判决的案件。 《后汉书.卷五六.张晧传》:「数与尚书辩正疑狱,多以详当见从。」
英语 a hard legal case to judge