barb

A barb is a hook-like point, like the backward-facing notch on a fishhook that helps it stay in place. But it also describes a harsh or critical comment—a verbal jab meant to sting. In most uses, the core idea is the same: something that catches, holds, or makes a sharp impression. You might say someone delivered a "cruel barb" during an argument to describe a remark that was especially hard to shake off.

The word comes from the Old French barbe, meaning "beard"—imagining prickly, hair-like projections on a chin can help you remember its pointed nature. It's often used in contexts involving conflict, weaponry, or anything with a potentially painful edge. Think fishing, fencing, and fiery debates.

A barb is essentially a projection—something that sticks out sharply and often has a backward-facing hook. In older and technical uses, it refers to the small projection on a spearhead, arrow, or fishhook that is designed to make the object hard to extract once it has entered. This is why we call it "barbed wire": twisted metal strands with backward-facing hooks meant to snare and hold.

However, "barb" also has a powerful figurative meaning: a harsh, critical, or stinging remark. A verbal barb is like a tiny arrow aimed at someone's feelings, intended to leave lingering discomfort. For example: "Her seemingly innocent question contained a subtle barb." The connection between physical and figurative meanings lies in the same idea—something that catches and holds, whether it is a hook in a fish’s mouth or a hurtful comment in someone's mind.

You also encounter "barb" in biology. In feathers, barbs are the tiny branches that grow from the central shaft, with barbules that interlock to create the smooth vane used for flight. Whether it is a physical point designed to hold fast or a sharp remark meant to sting, a barb always implies a projecting element that catches and may leave discomfort.