fretboard
noun
fret·board ˈfret-ˌbȯrd 
plural fretboards
: the part of a stringed instrument against which the fingers press the strings to vary the pitch : fingerboard
especially : one that has frets (see fret entry 5)
Her three-ply maple neck, black laminated spruce and maple body, pearl inlaid ebony fretboard, and gold-plated … pickups flash in the spotlights. 
Mike Sager
Mike Sager 
Word History
Etymology
fret entry 5 + board entry 1
First Known Use
1822, in the meaning defined above