What's in aid of?

What's something in aid of?

(British & Australian informal)

something that you say when you want to know why someone has done something I heard the shouting from the other side of the building. What was that in aid of? A present! What's this in aid of?

Common Names:

Name	Pronounced	Usage
Rihards	-	Latvian
Motel	-	Yiddish
Mclain	[mək'lein]
Eberhard	E-ber-hahrt (German)	German, Ancient Germanic
Sefton	SEF-tən	English (Rare)
Lorenzo	lo-REN-tso (Italian), lo-REN-tho (Spanish), lo-REN-so (Latin American Spanish)	Italian, Spanish