byword
/ˈbaɪwɜːd/noun
1- a person or thing cited as a notorious and outstanding example or embodiment of something代名词：
his name became a byword for luxury.
他的名字成了奢侈的代名词。
1.1
- a word or expression summarizing a thing's characteristics or a person's principles（某物特点或某人准则的）概括：
'Small is beautiful' may be the byword for most couturiers.
“小即美”可能是绝大多数女式服装设计师的原则性概括。