一笔钱

a sum of money

→ 一
phrase Rare #17,563
a sum of money 笔 is a measure word for sums or transactions of money; 一笔钱 refers to a particular amount of money.
CH: 他给了我一笔钱。
EN: He gave me a sum of money.

又省下一笔钱。

Saved another bit of money.

而且还慷慨地给我们一笔钱

He even generously gave us a sum of money.

— 豹 (1963)

他拿到了很大一笔钱。

He got a large sum of money.

我要赚一笔钱逃离这国家

I want to make enough money to leave this country.

— 小姐 (2016)

是小麦的一笔钱,

It’s a sum of money for Xiaomai.

— 色‧戒 (2007)