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English definition of “aid”

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aid

noun [C/U]  /eɪd/ us  
help or support, or something that provides it: [U] He gets around with the aid of a cane. [U] She went to the aid of a man trapped in his car. [C] A good dictionary can be a useful aid to understanding a new language. Aid is often used to refer to help given in the form of food, money, medical supplies, etc., to a country or group of people that is in need or because of an emergency: [U] foreign aid [U] Aid for the flood victims was on the way.
(Definition of aid from the Cambridge Academic Content Dictionary © Cambridge University Press)
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