Definition of Equal

Alike; uniform; on the same plane or level with respect to efficiency, worth, value, amount, or rights. Word "equal” as used in law implies not identity but duality and the use of one thing as the measure of another. Poindexter v. Willis, 23 Ohio Misc. 199, 256 N.E.2d 254, 260.

That's the definition of Equal in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.