Bound n. The external or limiting line, either real or imaginary, of any object or space; that which limits or restrains, or within which something is limited or restrained; limit; confine; extent; boundary.
He hath compassed the waters with bounds. --Job xxvi. 10.
On earth's remotest bounds. --Campbell.
And mete the bounds of hate and love. --Tennyson.
To keep within bounds, not to exceed or pass beyond assigned limits; to act with propriety or discretion.
Syn: -- See Boundary.