Can something with attributes not have a definition?

It is natural to think of definitions as something that we formulate, whereas attributes are usually thought of as something that we might formulate or construct (the attribute of being a human invention, for example), but also something that we do not invent or create. On this later view, there may be indefinitely many objects with attributes that we have yet to define and we might be incapable of defining. Even our brains, for example, might have attributes we might never discover. It may even be that everything we observe and is observable has an attribute that we may not know and hence be able to competently define (e.g. the attribute or property of being created by God or Brahman).
So, I suggest that some things do have attributes that lack definitions. For further thought, I suggest that some attributes may only be conceivable in cases of when we have definitions. So, in asserting that triangles have three sides, conceiving of the attribute of *being three sided* (or, in more detail: *being a closed three sided figure in 2 dimensional space*) may require or involve conceiving of the definition of a triangle.

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