canon -- (a rule or especially body of rules or principles generally established as valid and fundamental in a field or art or philosophy; "the neoclassical canon"; "canons of polite society")
canon -- (a priest who is a member of a cathedral chapter)
canyon, canon -- (a ravine formed by a river in an area with little rainfall)
canon -- (a contrapuntal piece of music in which a melody in one part is imitated exactly in other parts)
canon -- (a complete list of saints that have been recognized by the Roman Catholic Church)
canon -- (a collection of books accepted as holy scripture especially the books of the Bible recognized by any Christian church as genuine and inspired)