ding an sich of meaning

For me the Ding an Sich is first the thing in itself, i mean it is what makes something special be what it is.

So the ding an sich or the thing in itself of a meaning could be a sort of different things:

-As the significance of meaning i can say it is the thing that makes a relation between the signs and the kind of thing they mean, intend, express or signify.

-The principal of Ding an sich is the meaning of what cualifies another things and gives special cualities to thing and signs." The thing Its self or actually"