philosopher

noun6

1. •
   A student of philosophy.
2. •
   A scholar or expert engaged in or contributing to philosophical inquiry.

   • Their playwrights knew better. Scandal, murder, hair-rending and railing against the gods sold tickets. King is not a philosopher. He knows how to sell tickets. — 2007
3. •
   A lover of wisdom.
4. •
   (no longer used) A person who applies the principles of philosophy to the conduct of their life, as by acting calmly and rationally in the face of inevitable change.
5. •
   (no longer used) A student, scholar, or expert in any branch of knowledge, especially those branches studied prior to being considered part of pure science.
6. •
   (no longer used) An alchemist.

   • Then thus conclude I, since that God of heaven Will not that these philosophers neven How that a man shall come unto this stone, I rede as for the best to let it gon. — 1813