n. 25B6; noun
his unfamiliarity with the local customs : TRADITION, practice, usage, observance, way, convention, formality, ceremony, ritual; shibboleth, sacred cow, unwritten rule; mores; formal praxis.
it is our custom to visit the Lake District in October : HABIT, practice, routine, way; policy, rule; formal wont.
(Brit.) if you keep me waiting I will take my custom elsewhere : BUSINESS, patronage, trade.