Pronunciation: (kus'tu-mer"ē), [key]
—adj., n., pl. -ar•ies.
1. according to or depending on custom; usual; habitual.
2. of or established by custom rather than law.
3. Law.defined by long-continued practices: the customary service due from land in a manor.
1. a book or document containing the legal customs or customary laws of a locality.
2. any body of such customs or laws.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.