Definition of Effect

v. To do; to produce; to make; to bring to pass; to execute; enforce; accomplish.

n. That which is produced by an agent or cause; result; outcome; consequence. State by Clark v. Wolkoff, 250 Minn. 504, 85 N.W.2d 401, 410. The result which an instrument between parties will produce in their relative rights, or which a statute will produce upon the existing law, as discovered from the language used, the forms employed, or other materials for construing it. The operation of a law, of an agreement, or an act. The phrases “take effect,” “be in force,” “go into operation,” etc., are used interchangeably.

With effect. With success; as, to prosecute an action with effect.

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