kerfing

Etymology 1
See.

Noun

 * 1)  A thin strip of wood kerfed to allow easy bending and then glued inside the body of a string instrument along the rim between its two abutting sides to reinforce the joint.
 * Do you prefer bent solid linings or kerfings in your guitar? If kerfings, would you like regular or reversed kerfing?

Translations

 * Russian: