Ordinance (noun)

1. A law or regulation made by a local government.
2. An authoritative instruction or direction.

Origin:

Late middle english: from old french ordenance, from latin ordinantia, neuter plural of ordinans, ordinant- "ordering, arranging", from ordinare (see ordain).

Examples:

1. The new ordinance requires all businesses to have a certain number of handicapped parking spaces.
2. The city passed an ordinance banning smoking in all public places.
3. The ordinance was passed to improve public safety.
4. The ordinance was enforced by local police.
5. The ordinance was met with mixed reactions from citizens.