Restriction, n.
Etymology: [F. restriction, L. restrictio.]
1. The act of restricting, or state of being restricted; confinement within limits or bounds. This is to have the same restriction with all other recreations,that it be made a divertisement. Giv. of Tonque.
2. That which restricts; limitation; restraint; as, restrictions on trade.
Shades of meaning
Fernald has no entry of its own for restriction; he lists it under barrier.
He lists it without comment; the entries above explain its neighbors.