A very hard, fine-grained quartz that sparks when struck

• Nodules in chalk or limestone, used for tools and fire

非常坚硬的细粒石英，敲击可迸出火花

• 常见于白垩或石灰岩的结核，用于制工具和取火

A shaped piece of flint used to strike sparks

• A gunflint for flintlock firearms or a firestarter chip

用于击打生火的燧石碎块

• 用于燧发火枪或打火器的火石

A small spark-producing cylinder in a cigarette lighter

• Often a synthetic alloy rather than true flint

打火机内产生火花的小圆柱火石

• 多为合金材料而非真正的燧石

A variety of corn with a very hard outer hull

外壳极硬的一种玉米品种

Something extremely hard

• A character or manner that is cold or unyielding

极其坚硬的事物

• 冷硬或不屈的性格

To face, pave, or decorate with flint

用燧石覆面、铺砌或装饰