defect

A defect is something that's wrong or missing from something else.

When we talk about defects, we usually mean problems with things like products, buildings, or even people. For example, if a car has a defective brake system, it means the brakes don't work properly and could be dangerous on the road. In construction, a building might have defects in its foundation or walls, which can make it unstable. Even a person's health can have defects, like a heart condition that needs treatment.

The word "defect" also has other meanings based on how it's used. If you say someone is defective, you probably mean they're flawed or not quite right somehow. This can be a bit harsh and might sound judgmental, but in some cases, people use it to describe someone with certain personality traits that make them hard to get along with.

The word "defect" as an adjective can also mean lacking something essential. For instance, a defective product is one that doesn't meet the manufacturer's standards or is missing important features.