n. One who spends time thinking, contemplating or meditating
n. An intellectual, such as a philosopher or theologian
the GNU version of the Collaborative International Dictionary of English
n. One who thinks; especially and chiefly, one who thinks in a particular manner
The Century Dictionary and Cyclopedia
n. One who thinks; especially, one who has cultivated or exercised to an unusual extent the powers of thought.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an important intellectual
n. someone who exercises the mind (usually in an effort to reach a decision)
Word Usage
"For a dishonest thinker is under no moral obligation to accept a conclusion to which his logic drives him; even if he loses the argument, a dishonest thinker is not under a duty to change his mind or mend his ways."