aid

noun7

1. •
   help or support given to someone who needs it

   • He came to my aid when I was foundering.
2. •
   A helper; an assistant.

   • It is not good that man should bee alone, let vs make vnto him an aide like to himselfe. — 1611
3. •
   Something which helps; a material source of help.

   • Slimming aids include dietary supplements and appetite suppressants.
4. •
   [in the plural] The rider's use of hands, legs, voice, etc. to control the horse.
5. •
   (UK) An historical subsidy granted to the crown by Parliament for an extraordinary purpose, such as a war effort.

   • In this parliament was granted to the king for defence against the Scots two aids and two quindecims, the which two aids did not extend over two quindecims. — 2019
6. •
   A pecuniary tribute paid by a vassal to his feudal lord on special occasions.
7. •
   (UK) An exchequer loan.

verb2

1. •
   To provide support to; to further the progress of; to help; to assist.

   • You speedy helpers […] Appear and aid me in this enterprise. — 1591
2. •
   To climb with the use of aids such as pitons.

noun1

1. •
   Initialism of artificial insemination by donor.

   • Here is the first book to thoroughly look at topics such as the social and personal aspects of lesbian motherhood; the implications of AID; and how children feel about growing up with lesbian mothers. — 1982