fiver
noun [ C ] uk/ˈfaɪ.vər/ us/ˈfaɪ.vɚ/
UK informal5英镑（钞票）
five pounds, or a note worth five pounds
This CD only cost me a fiver. 这张CD只花了我5英镑。
Can you change a tenner for two fivers? 你能把这张10英镑的钞票换成两张5英镑的吗？
See also: tenner
US informal5美元（钞票）
a five dollar bill