fiver

Noun

• A banknote with a value of five units of currency.
• The value in money that this represents.
• A clenched fist.
• A mathematical puzzle played on a 5 × 5 grid.
• A Zaydi Shiite Muslim, who disagrees with the majority of Shiites on the identity of the Fifth Imam.
• 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).