Merriam-Webster Collegiate Dictionary - philosopher

 noun  Etymology: Middle English philosophe, philosophre, from Anglo-French, from Latin philosophus, from Greek philosophos, from phil- + sophia wisdom, from sophos wise  Date: 14th century  1.  a. a person who seeks wisdom or enlightenment ; scholar, thinker  b. a student of philosophy  2.  a. a person whose philosophical perspective makes meeting trouble with equanimity easier  b. an expounder of a theory in a particular area of experience  c. one who philosophizes