flint

1. N-UNCOUNT Flint is a very hard greyish-black stone that was used in former times for making tools. 燧石

...a flint arrowhead. ...一个燧石箭头。

...eyes the colour of flint. ...燧石色眼睛。

2. N-COUNT A flint is a small piece of flint which can be struck with a piece of steel to produce sparks. 打火石