1. a person or thing that has become widely known as a perfect example of a particular quality
2. a common saying or proverb
Usage: somewhat archaic

Examples

• The company became a byword for quality and reliability.
• His name is a byword for corruption in politics.
• The restaurant is a byword for excellent service.
• The old castle became a byword for mystery and intrigue.
• Her generosity made her a byword for kindness in the community.
• The phrase became a byword among the townspeople.