/ ˈpɑːspɔːt; NAmE ˈpæspɔːrt/ noun
1.
an official document that identifies you as a citizen of a particular country, and that you may have to show when you enter or leave a country :
a valid passport
a South African passport
I was stopped as I went through passport control (= where passports are checked) .
a passport photo
2.
passport to sth a thing that makes sth possible or enables you to achieve sth
SYN key :
The only passport to success is hard work.
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WORD ORIGIN
late 15th cent. (denoting authorization to depart from a port): from French passeport , from passer to pass + port seaport.