From Longman Dictionary of Contemporary Englishfood for thoughtfood for thoughtTHINK something/HAVE A THOUGHTsomething that makes you think carefully The teacher’s advice certainly gave me food for thought. → food
Examples from the Corpus
food for thought• Jeffcoate W.. Obesity is a disease: food for thought.• Ian Wright also had food for thought as he made a hasty exit from Arsenal's demoralised dressing room.• And there is plenty of food for thought.• The study on poverty certainly offers food for thought to America's leaders.• It's food for thought, though.• The lack of parcels and buses gave us all some food for thought of late.• Several interesting issues present some food for thought, however.• That building provides us with food for thought.• He never got past the words food for thought. 