cop a pleaglossary / COP A PLEA cop a plea, vb. Slang. (Of a criminal defendant) to plead guilty to a lesser charge as a means to avoid standing trial for a more serious offense. See PLEA BARGAIN. 词条贡献者 双语律师Jason,国内知名法学院国际贸易专业,擅长翻译各类与出口管制、经济制裁及海关相关的法律文件。