Meaning of the word "go through customs" in English

What does "go through customs" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

go through customs

US /ɡoʊ θruː ˈkʌstəmz/
UK /ɡəʊ θruː ˈkʌstəmz/
"go through customs" picture

Phrase

to pass through the area at an airport or port where officials check goods and luggage for illegal items or taxes

Example:
It took us over an hour to go through customs after our flight landed.
Do I need to go through customs if I have nothing to declare?