The story
After Joseph Honoré Simon Beau (1806–1865)
First known use, by meaning
- from c. 1850 Crosswise, linear indentations of fingernails.
Etymology from Wiktionary, CC BY-SA 4.0.
Beau's lines
Today it means: Crosswise, linear indentations of fingernails. Full definition →
First used c. 1850