Full Idea
Tarski work was to persuade physicalist that eliminating semantics was on the wrong track, and that we should explicate notions in the theory of reference nonsemantically rather than simply get rid of them.
Gist of Idea
Physicalists should explain reference nonsemantically, rather than getting rid of it
Source
report of Alfred Tarski (The Concept of Truth for Formalized Languages [1933]) by Hartry Field - Tarski's Theory of Truth §3
Book Reference
'The Nature of Truth', ed/tr. Lynch, Michael P. [MIT 2001], p.377