falconer errorglossary / FALCONER ERROR Falconer error. A trial court’s failure to instruct the jury that a guilty finding on a manslaughter charge requires acquittal on a murder charge. Falconer v. Lane, 905 F.2d 1129 (7th Cir. 1990). 词条贡献者 双语律师郭敏,国际知名商学院金融专业,擅长翻译各类与金融衍生品与结构化产品相关的法律文件。