Aid, n.
 1. Help; succor; assistance; relief.
    An unconstitutional mode of obtaining aid.   --Hallam.
 2. The person or thing that promotes or helps in something done; a helper; an assistant.
    It is not good that man should be alone; let us make unto him an aid like unto himself.   --Tobit viii. 6.
 3. Eng. Hist. A subsidy granted to the king by Parliament; also, an exchequer loan.
 4. Feudal Law A pecuniary tribute paid by a vassal to his lord on special occasions.
 5. An aid-de-camp, so called by abbreviation; as, a general's aid.
 Aid prayer Law, a proceeding by which a defendant beseeches and claims assistance from some one who has a further or more permanent interest in the matter in suit.
 To pray in aid, to beseech and claim such assistance.

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