n. The act of concealing, hiding, or keeping secret.n. Specifically, in law, the intentional suppression of truth, to the injury or prejudice of another.n. The state of being concealed or withdrawn from observation; privacy; retreat.n. Shelter from observation; protection from discovery; a place or means of such shelter or protection: as, his only concealment was an arbor of boughs.n. In English history, property, as land, the ownership of which was concealed from the commissioners for the dissolution of monasteries, etc., at the time of the Reformation. Also called concealed land.n. Secret knowledge; a secret; mystery.n. Synonyms and Secrecy, hiding, hiding-place, retreat, disguise.