'How much is a whiskey on the rocks?' 'Five quid.'
Can you lend me a couple of quid?
I have only three quid left.
One pound (100 pence) in British Sterling (GBP). In very common use, all across the UK. That'll be a quid mate That's going to set you back about 3, 4 hundred quid bjutiful frejzal pipel 😊 I need twenty quid for petrol.
... situations where it's a quid pro quo or that...