n. - The act of protecting, or the state of being protected; preservation from loss, injury, or annoyance; defense; shelter; as, the weak need protection.
n. - That which protects or preserves from injury; a defense; a shield; a refuge.
n. - A writing that protects or secures from molestation or arrest; a pass; a safe-conduct; a passport.
n. - A theory, or a policy, of protecting the producers in a country from foreign competition in the home market by the imposition of such discriminating duties on goods of foreign production as will restrict or prevent their importation; -- opposed to free trade.