A charm that allows the caster to summon an object
‘Accio! Accio! Accio!’ she shouted, and toffees zoomed from all sorts of unlikely places, including the lining of George’s jacket...
That’s right, come on, let’s all … let’s all have a drink while we’re waiting. Accio Butterbeer!
‘LIAR!’ she shrieked, but he could hear the terror behind the anger now. ‘YOU’VE GOT IT, POTTER, AND YOU WILL GIVE IT TO ME!
Harry Potter and the Order of the Phoenix
By J.K. Rowling