Longman Dictionary of Contemporary English homepage

aid

1 noun
     
aid1 S2 W2
1 [uncountable] help, such as money or food, given by an organization or government to a country or to people who are in a difficult situation:
Foreign aid from many countries poured into the famine area.
convoys delivering humanitarian aid
a substantial aid programme
He has been granted legal aid (=free legal services).
2 [uncountable] help that you need to do a particular thing
with/without the aid of something
Father Poole walked painfully, with the aid of a stick.
3

in aid of something

in order to help a charity:
We're collecting money in aid of cancer research.
4 [uncountable] help or advice that is given to someone who needs it
come/go to somebody's aid (=help someone)
I didn't speak any French, but a nice man came to my aid.
5 [countable] something such as a machine or tool that helps someone do something:
A video is a useful aid in the classroom.
a hearing aid
6

what's this in aid of?

British English spoken used to ask what something is used for or why someone is doing something:
What's this meeting tomorrow in aid of, then?
7PGO an American spelling of aide

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary