ruminator

from WordNet (r) 3.0 (2006)
ruminator
    n 1: a reflective thinker characterized by quiet contemplation
         [syn: {muser}, {muller}, {ponderer}, {ruminator}]
    
from The Collaborative International Dictionary of English v.0.48
Ruminator \Ru"mi*na`tor\, n. [L.]
   One who ruminates or muses; a meditator.
   [1913 Webster]
    

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