[, ]an official way of showing who you are, for example a document with your name, date of birth and often a photograph on it 身分；身分证◆You must carry ID at all times. 你必须随身携带身分证。◆an ID card/badge/number 身分证；身分标牌；身分证号码ⓘ ID is a short form of ‘identity’ or ‘identification’. ID 是 identity 或 identification 的缩写。