Here we go.

[The One and Only...]

Originally Posted by derrida

Define the verb "to be" as used in this sentence.

To exist in actuality. You can deny anything underlying or beyond a given perception, but you cannot deny the perception itself.

I think we're getting close to that "cannot be further explained by language" element...

So why not come out and say that abstractions are necessary components of meaning?

That sounds plausible. In reference to any experience I recall having, abstractions have been necessary to give meaning.