Definition from Wiktionary, the free dictionary
Etymology 1 
See kerf (verb)
- Present participle of kerf.
Etymology 2 
kerfing (plural kerfings)
- (music, chiefly lutherie) 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?