the crime of telling a lie in court after you have sworn to tell the truth 伪证；伪誓；伪证罪 to commit perjury 作伪证 The defence witnesses were found guilty of perjury. 辩方证人被判作伪证罪。
Word Originlate Middle English: from Anglo-Norman French perjurie, from Latin perjurium ‘false oath’, from the verb perjurare ‘swear falsely’, from per- ‘to ill effect’ + jurare ‘swear’.