Definition of sanction

• n. - Solemn or ceremonious ratification; an official act of a superior by which he ratifies and gives validity to the act of some other person or body; establishment or furtherance of anything by giving authority to it; confirmation; approbation.
• n. - Anything done or said to enforce the will, law, or authority of another; as, legal sanctions.
• v. t. - To give sanction to; to ratify; to confirm; to approve.