The Collaborative International Dictionary
Aid \Aid\, n. [F. aide, OF. a["i]de, a["i]e, fr. the verb. See Aid, v. t.]
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Help; succor; assistance; relief.
An unconstitutional mode of obtaining aid.
--Hallam. -
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. (Eng. Hist.) A subsidy granted to the king by Parliament; also, an exchequer loan.
(Feudal Law) A pecuniary tribute paid by a vassal to his lord on special occasions.
--Blackstone.-
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.