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.
      [1913 Webster]

   3. (Eng. Hist.) A subsidy granted to the king by Parliament;
      also, an exchequer loan.
      [1913 Webster]

   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]

Moby Thesaurus II by Grady Ward, 1.0:

189 Moby Thesaurus words for "aid":
   Samaritan, a leg up, abet, acolyte, adjutant, agent, aide,
   aide-de-camp, aider, alimony, alleviate, alleviation, allotment,
   allowance, alterative, analeptic, ancilla, annuity, assist,
   assistance, assistant, assister, assuagement, attendant, auxiliary,
   avail, backer, backing, bail out, balm, balsam, bear a hand,
   befriend, befriender, benefactor, benefactress, benefit, benefiter,
   best man, bounty, carriage, carrying, clear the way, coadjutant,
   coadjutor, coadjutress, coadjutrix, comfort, corrective, cure,
   depletion allowance, deputy, do for, do good, doctor, dole, ease,
   executive officer, expedite, explain, facilitate, favor,
   fellowship, finance, financial assistance, fund, give a boost,
   give a hand, give a lift, give help, good Samaritan, good person,
   grant, grant-in-aid, grease, grease the ways, grease the wheels,
   guaranteed annual income, hand, hasten, healing agent,
   healing quality, help, help along, help out, helper, helping hand,
   helpmate, helpmeet, jack-at-a-pinch, lend a hand, lend one aid,
   lieutenant, lift, lighten, loose, lubricate, maintenance,
   make clear, make way for, ministering angel, ministrant, mitigate,
   mitigation, moral support, oil, old-age insurance, open the way,
   open up, paranymph, paraprofessional, patron, pave the way,
   pay the bills, pecuniary aid, pension, pension off,
   prepare the way, prescription, price support, proffer aid, protect,
   psychological support, public assistance, public welfare, quicken,
   rally, receipt, recipe, reclaim, redeem, reliance, relief, relieve,
   remedial measure, remedy, remove friction, render assistance,
   rescue, restorative, restore, resuscitate, retirement benefits,
   revive, run interference for, save, scholarship, second,
   security blanket, servant, set up, sideman, simplify, smooth,
   smooth the way, soap the ways, sovereign remedy, specific,
   specific remedy, speed, stead, stipend, striker, subsidization,
   subsidize, subsidy, subvention, succor, succorer, support,
   supporting actor, supporting instrumentalist,
   supportive relationship, supportive therapy, sustaining,
   sustainment, sustenance, sustentation, take in tow, tax benefit,
   unbar, unblock, unclog, unjam, upholding, upkeep, welfare,
   welfare aid, welfare payments



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

AID
       Application IDentifier (APDU)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

AID
       Attention Interrupt Device [key] (IBM)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

AID
       AUTODIN Interface Device (AUTODIN, mil., USA)


The Free On-line Dictionary of Computing (30 December 2018):

Algebraic Interpretive Dialogue
AID

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

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

   (1995-04-12)