perp walkglossary / PERP WALK perp walk. Slang. The act of making a suspect in custody walk before an audience, esp. members of the media. • Perp is short for perpetrator. 词条贡献者 法律翻译David,毕业于美国顶尖的高级翻译学院,专注翻译各类与电子证据开示与文件保全有关的法律文件。