Auxilium, in ancient customs, a subsidy paid by vassals to their lords on certain occasions.

AID-de-Camp, in military affairs, an officer employed to receive and carry the orders of a general.

AIDS, in the French customs, were certain duties paid on all goods exported or imported into that kingdom.

Court of Aids, in France, a sovereign court formerly established in several cities, which had cognizance of all causes relating to the taxes, gabelles, and aids, imposed on several sorts of commodities, especially wine.