Lewis Short
(verb) : rūmĭnor, āri
* V. dep. a., and (after the Aug. period) rūmĭno, āre, and a. [rumen], to chew over again, chew the cud, to ruminate.
* Lit.
* Neutr.: bos ruminat,Col. 6, 6, 1; Plin. 11, 37, 61, § 160; 9, 17, 29, § 62 al.; Vulg. Lev. 11, 26.
* Trop., to think over, to muse or ruminate upon (only anteand post-class.; but cf. ruminatio): nemo haec ruminetur mulieri, Liv. Andron. ap. Non. 166, 29: ruminabitur humanitatem, Varr. ap. Non. 166, 27: Odyssean Homeri ruminari incipis,id. ib. 480, 24: ruminaris antiquitates,id. ib. 480, 23: dum carmina tua ruminas,Symm. Ep. 3, 13 fin.
Charlton T. Lewis, Charles Short, A Latin Dictionary