aid

1. (uncountable) Help; assistance; succor, relief.Examples: "He came to my aid when I was foundering."; "An unconstitutional method of obtaining aid."; "“[…] it is not fair of you to bring against mankind double weapons ! Dangerous enough you are as woman alone, without bringing to your aid those gifts of mind suited to problems which men have been accustomed to arrogate to themselves.”"uncountable

2. (countable) A helper; an assistant.Examples: "It is not good that man should bee alone, let vs make vnto him an aide like to himselfe."countable

3. (countable) Something which helps; a material source of help.Examples: "Slimming aids include dietary supplements and appetite suppressants."; "The human is so poorly designed for aquatic adventures that he cannot even see in the water without artificial aids."; "The ability of a segment of a glass sphere to magnify whatever is placed before it was known around the year 1000, when the spherical segment was called a reading stone[…]. Scribes, illuminators, and scholars held such stones directly over manuscript pages as an aid in seeing what was being written, drawn, or read."countable

4. (countable, British) An historical subsidy granted to the crown by Parliament for an extraordinary purpose, such as a war effort.Examples: "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."Britishcountable

5. (countable, British) An exchequer loan.Britishcountable

6. (countable, law) A pecuniary tribute paid by a vassal to his feudal lord on special occasions.countable