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A person who is deeply in thought.
Lost in deep rumination, the girl Is creating a beautiful masterpiece of sculptural abstract art.
by Ehf October 04, 2017
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when hastily eaten food is regurgitated and reswallowed
"That pizza gave me such heartburn I nearly upchucked! Thank God for rumination or I could have decorated your dad's Oldsmobile!"
by Crazed Doc July 18, 2006
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