1. thought deeply about something; pondered or reflected carefully
Usage: past tense of ruminate
2. chewed cud (of ruminant animals like cows)
Usage: biological term; past tense of ruminate

Examples

• She ruminated on the difficult decision for hours.
• He ruminated over his career choices during the long walk.
• The philosopher ruminated about the meaning of existence.
• After the meeting, she ruminated on what had been discussed.
• The cattle ruminated peacefully in the pasture.
• I ruminated on her advice before making my choice.