passport
     n 1: any authorization to pass or go somewhere; "the pass to
          visit had a strict time limit" [syn: {pass}]
     2: a document issued by a country to a citizen allowing that
        person to travel abroad and re-enter the home country
     3: any quality or characteristic that gains a person a
        favorable reception or acceptance or admission; "her
        pleasant personality is already a recommendation"; "his
        wealth was not a passport into the exclusive circles of
        society" [syn: {recommendation}]
Source: WordNet® 2.0