English definition of “aid”
HELP [U] › money, food, or equipment that is given to help a country or group of people: Emergency aid was sent to the flood victims. aid workers
in aid of sb/sth UK › in order to collect money for a group of people who need it: a concert in aid of famine relief
with the aid of sth › using something to help you: She can walk with the aid of a stick.
come/go to sb's aid › to go to someone and help them: Luckily a policeman came to my aid.
EQUIPMENT [C] › a piece of equipment that helps you to do something: teaching aids such as books and videos → See also Band-Aid → See also first aid → See also visual aid