bourreletn.

/bʊrəˈleɪ/Etymology: French: also adopted in forms bourlet n., burlet n.
the world > life > biology > physical aspects or shapes > projection or protuberance > [noun] > ridge
1859 V. 477/2 The ridge or ‘bourrelet’ at the upper margin of the wall answers to the posterior nail-wall.
This entry has not yet been fully updated (first published 1887; most recently modified version published online June 2022).