As new shops have opened people have been taking their 'custom' [='business'] elsewhere.
It is the 'custom' for the bride to wear a white dress on her wedding day.
We went through 'customs' at the airport without any difficulty.
(..) Come on. We'll meet later at l'Angleterre. Or do you prefer the Hermitage? Let's say, at l'Angleterre. I owe them more than the Hermitage, so it wouldn't be fair to withdraw my custom. Uh, so, new boots, coat, and a proper hat. Excuse me. Excuse me. Excuse me. Do you... Do you... Excuse me. (..)2012 Anna Karenina