1Customs; the government agency (and its checkpoint, typically at an airport or port) that inspects imported and exported goods and travelers, and collects duties.
税関で荷物の中身を聞かれた。
I was asked about the contents of my luggage at customs.
お酒を免税範囲以上に持ち込むと税関で申告が必要です。
If you bring in more alcohol than the duty-free limit, you must declare it at customs.
空港の税関を通過するのに時間がかかった。
It took a while to get through customs at the airport.
輸入した商品は税関のチェックを受ける。
Imported goods undergo inspection by customs.