Refinement can have different meanings depending on the context. Here are some definitions and examples from the search results:

• Refinement can refer to a process of making small changes or additions to something in order to improve it. For example, older cars may lack the latest safety refinements.

• Refinement can also refer to a quality of excellence, perfection, or impeccable taste. This can apply to people, substances, or things that have gone through a process of refinement. For example, someone who has good manners and taste can be said to have refinement.

• Refinement can also refer to a quality of politeness and education. This can be seen as a synonym for sophistication, culture, or good manners.

• Refinement can also refer to a subtle point or distinction, or a highly refined distinction. This can be seen as a synonym for subtlety, precision, or fineness of thought or expression.

Overall, refinement can be seen as a process or quality of improvement, excellence, and sophistication. It can apply to various domains, such as technology, culture, manners, or thought.