1) Acts nervous 2) Acts the worrywart 3) Banjo neck features 4) Banjo ridges 5) Bars of music 6) Bars on necks 7) Borrows trouble 8) Broods 9) Displays vexation 10) Feels anxious 11) Feels discontent 12) Finger board ridges 13) Finger guides on a ukulele 14) Fingerboard dividers 15) Fingerboard features 1) Chafes 2) Repines 3) Stews 4) Worries 
Vertical metal wires which sit vertically on the guitar neck.