ru·mi·nate 
(rmə-nāt′)
(rmə-nāt′)v. ru·mi·nat·ed, ru·mi·nat·ing, ru·mi·nates
v.intr.
1. To turn a matter over and over in the mind.
2. To chew cud.
v.tr.
To reflect on over and over again.
[Latin rūmināre, rūmināt-, from rūmen, rūmin-, throat.]
rumi·na′tive adj.
rumi·na′tive·ly adv.
rumi·na′tor n.