The Collaborative International Dictionary of English v.0.48:

Aid \Aid\, v. t. [imp. & p. p. Aided; p. pr. & vb. n.
   Aiding.] [F. aider, OF. aidier, fr. L. adjutare to help,
   freq. of adjuvare to help; ad + juvare to help. Cf.
   Adjutant.]
   To support, either by furnishing strength or means in
   co["o]peration to effect a purpose, or to prevent or to
   remove evil; to help; to assist.
   [1913 Webster]

         You speedy helpers . . .
         Appear and aid me in this enterprise.    --Shak.
   [1913 Webster]

   Syn: To help; assist; support; sustain; succor; relieve;
        befriend; co["o]perate; promote. See Help.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Aid \Aid\, n. [F. aide, OF. a["i]de, a["i]e, fr. the verb. See
   Aid, v. t.]
   1. Help; succor; assistance; relief.
      [1913 Webster]

            An unconstitutional mode of obtaining aid. --Hallam.
      [1913 Webster]

   2. The person or thing that promotes or helps in something
      done; a helper; an assistant.
      [1913 Webster]

            It is not good that man should be alone; let us make
            unto him an aid like unto himself.    --Tobit viii.
                                                  6.
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   3. (Eng. Hist.) A subsidy granted to the king by Parliament;
      also, an exchequer loan.
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   4. (Feudal Law) A pecuniary tribute paid by a vassal to his
      lord on special occasions. --Blackstone.
      [1913 Webster]

   5. An aid-de-camp, so called by abbreviation; as, a general's
      aid.
      [1913 Webster]

   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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

aid
    n 1: a resource; "visual aids in teaching" [syn: aid,
         assistance, help]
    2: the activity of contributing to the fulfillment of a need or
       furtherance of an effort or purpose; "he gave me an assist
       with the housework"; "could not walk without assistance";
       "rescue party went to their aid"; "offered his help in
       unloading" [syn: aid, assist, assistance, help]
    3: money to support a worthy person or cause [syn: aid,
       economic aid, financial aid]
    4: the work of providing treatment for or attending to someone
       or something; "no medical care was required"; "the old car
       needs constant attention" [syn: care, attention, aid,
       tending]
    v 1: give help or assistance; be of service; "Everyone helped
         out during the earthquake"; "Can you help me carry this
         table?"; "She never helps around the house" [syn: help,
         assist, aid]
    2: improve the condition of; "These pills will help the patient"
       [syn: help, aid]

The Free On-line Dictionary of Computing (19 January 2023):

Algebraic Interpretive Dialogue
AID

    (AID) A version of Joss II for the PDP-10.

   ["AID (Algebraic Interpretive Dialogue)", DEC manual, 1968].

   (1995-04-12)