noun
passport
PAS-port/ˈpæspɔːrt/
An official document identifying a person and that person's nationality for international travel.
The traveler presents her passport for inspection at the border counter.

Etymology
A passport originally authorized someone to pass through a port when entering or leaving a country. The name shifted from that permission to the official document naming the traveler and authorizing international travel.
In context
have a valid US driver's license from any state, sir? >> I have my passport, sir.
More examples
- My passport expires next month, so I need to renew it.
- The border officer checks our passports before letting us through.
- You need a valid passport for this international flight.
Forms
passport · passports
Similar words
- travel document
- Broader term covering passports and other official documents for travel.
- ID
- Identifies a person but need not establish nationality for travel.