Webster's Revised Unabridged Dictionary · 1913

Aid

Aid ({not transcribed}) , transitive verb

[French aider, Old French aidier, from Latin adjutare to help, freq. of adjuvare to help; ad + juvare to help. Compare Adjutant.]

To support, either by furnishing strength or means in cooperation to effect a purpose, or to prevent or to remove evil; to help; to assist.
You speedy helpers... Appear and aid me in this enterprise. — Shakespeare

Aid , noun

[French aide, Old French aide, aie, from the verb. See Aid, transitive verb]

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. — Blackstone
5.
An aid-de-camp, so called by abbreviation; as, a general's aid.
Collocations (2)
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.