What does "politician" mean?

Politician: One primarily devoted to his own advancement in public office, or to the success of a political party; -- used in a depreciatory sense; one addicted or attached to politics as managed by parties (see Politics, 2); a schemer; an intriguer; as, a mere politician. Like a scurvy politician, seem To see the things thou dost not. Shak. The politician . . . ready to do anything that he apprehends for his advantage. South.