byword

1 an often stated observation regarding something from common experience <Mom's favorite byword is “You can get more flies with honey than with vinegar”> Synonyms adage, aphorism, apothegm, saying, epigram, maxim, proverb, saw, sententia, wordRelated Words bromide, cliché (also cliche), commonplace, platitude, wheeze; expression, felicity; axiom, motto, precept, truism, truth; formula; comment, note, reflection, remark

2 the most perfect type or example <nationally, Beverly Hills' Rodeo Drive has become a byword for luxury retailing> Synonyms acme, apotheosis, beau ideal, quintessence, classic, epitome, exemplar, ideal, perfectionRelated Words archetype, model, prototype; paradigm, standard; nonpareil, paragon; abstract, avatar, embodier, embodiment, incarnation, incorporation, manifestation, personification; height, last word, meridian, ultimate, zenith; benchmark, criterion, touchstone, yardstick