From Longman Dictionary of Contemporary Englishflower powerˈflower ˌpower noun [uncountable] SSYPPPthe ideas of young people in the 1960s and 70s who believed that peace and love were the most important things in life
Examples from the Corpus
flower power• It was a time for flower power and a return to nature and the simple ways.• They bloom earlier too, meaning more flower power per pound.• The date of this odd but interesting ballet might suggest intimations of flower power.• With spring in the air, why not let some flower power go to your head.• So buy a daffodil ... and give a new meaning to flower power. 