n.

1. （社會，團體的）習俗，慣例[C][U]
   The celebration of Christmas is a custom.

   慶祝耶誕節是一種風俗。

2. （個人的）習慣[C]
3. （顧客對商店等的）惠顧[U]；顧客[U]
4. （常大寫）海關[the P]
   Did you have any trouble with the Customs?

   你通過海關有麻煩嗎？

5. 關稅[P]

a.

1. 訂做的，訂製的[B]

n.

1. a traditional and widely accepted way of behaving or doing something that is specific to a particular society, place, or time.
   ▸Law  established usage having the force of law or right.
2. Brit. regular dealings with a shop or business by customers.