Definition: Anfractuous refers to something fragile or brittle in nature; it's a description that describes how things can be easily broken or broken apart. In biblical context, it's used to describe certain types of rocks and minerals that are often hard and brittle, but they still possess some strength. This word is used in Genesis 4:17-20 to describe the hardness of stones like iron and gold which cannot break under ordinary conditions; here, it signifies that the materials we call "anfractuous" are actually very durable and can endure various types of rough handling.