Noun

1. a banknote with a value of five, in the local currency
   • Do you have a fiver I could borrow, I can pay you back tomorrow.
2. by extension the value in money that this represents.
   • I bought the chocolates, they were only a fiver.
3. a clenched fist
4. a mathematical puzzle played on a 5x5 grid
5. a Zaydi Shiite Muslim, who disagrees with the majority of Shiites on the identity of the Fifth Imam
6. A person who gives five percent of their income or five hours a week of their time to charity (a reduction of ten percent tithing)