custom
1.
2.
3.
4. a. Habitual patronage, as of a store. b. Habitual customers; patrons.
5. customs
(used with a sing. verb ) a. A duty or tax imposed on imported and, less commonly, exported goods. b. The governmental agency authorized to collect these duties. c. The procedure for inspecting goods and baggage entering a country.
6. Tribute, service, or rent paid by a feudal tenant to a lord.
adjective
[Middle English custume, from Old French costume, from Latin cōnsuētūdō, cōnsuētūdin-, from cōnsuētus past participle of cōnsuēscere, to accustom : com-, intensive pref.. See