Information or knowledge that is worthy of contemplation.(noun)
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Use "food for thought" in a sentence
"First my wife, Barbara Sofer Schroeder, and our children, Hanna, Yael, Hadas, Joshua, and Avraham, provided plenty of food for thought in our many dinner table discussions."
"It was all most interesting, and gave me food for thought until the horns sounded to signal the departure of the royal progress to Maian Mir."