an official document issued by a government, certifying the holder's identity and citizenship and entitling them to travel under its protection to and from foreign countries 护照 ■[in sing.]a thing that ensures admission to or the achievement of something 保障,手段 good qualifications are a passport to success. 良好的资质是成功的保障。
语源
late 15th cent. (denoting authorization to depart from a port): from French passeport, from passer 'to pass' + port 'seaport'