Pronunciation: (kus'tum),[key] —n. 1. a habitual practice; the usual way of acting in given circumstances.
2. habits or usages collectively; convention.
3. a practice so long established that it has the force of law.
4. such practices collectively.
5. Sociol.a group pattern of habitual activity usually transmitted from one generation to another.
6. toll; duty.
7. customs, a. (used with a sing. or pl. v.) duties imposed by law on imported or, less commonly, exported goods.
b. (used with a sing. v.) the government department that collects these duties.
c. (used with a sing. v.) the section of an airport, station, etc., where baggage is checked for contraband and for goods subject to duty.
8. regular patronage of a particular shop, restaurant, etc.
9. the customers or patrons of a business firm, collectively.
10. the aggregate of customers.
11. (in medieval Europe) a customary tax, tribute, or service owed by peasants to their lord.
—adj. 1. made specially for individual customers: custom shoes. 2. dealing in things so made, or doing work to order: a custom tailor.