To think or think about carefully and at length
To chew the cud
Gently accept it; you cannot change it, and the more you ruminate over it, the worse it will make you feel.
A moon that falls in Scorpio has the tendency to brood and ruminate, but it also gives much strength, determination and perseverance to the individual.
As the afternoon dwindled, the Deans were content to rock and ruminate.
Do not ruminate anywhere except in your chosen spot.
ruminate on the subject among this group.