A general term for a mental category.
A general term for a universal, a category, or a mental label. A concept of something need not be verbal. For example, one has a concept of what a pretty face looks like, what one's mother looks like, what a good soup tastes like, what a properly tuned guitar sounds like, what a valid line of reasoning is, what one plus one equals, and so on.
J Hopkins: conceptual consciousness; thought; investigation.