(1):

(n.) An established rite or ceremony.

(2):

(n.) Rank; order; station.

(3):

(n.) Ordnance; cannon.

(4):

(n.) A rule established by authority; a permanent rule of action; a statute, law, regulation, rescript, or accepted usage; an edict or decree; esp., a local law enacted by a municipal government; as, a municipal ordinance.

(5):

(n.) Orderly arrangement; preparation; provision.