Means "What" in Latin; in a deeper sense it refers to the core meaning of that something.
British Slang for one Pound Sterling (£), originally referring to the pound note (plural is quid, not quids, despite the expression "quids in", referring to a financially positive end to a transaction or venture). The Irish Pound and the Australian Pound were also referred to by this name. Can also refer to EuroCurrency in Ireland , although the term Yo-yo has also been coined for the euro.