Related Clues:

• Stews (over)
• Acts nervous
• Worries nervously
• They're lined up on a neck
• Wrings one's hands, say
• They're seen on the neck
• Feels discontent
• Bars of music?
• Guitar sequence
• Banjo ridges
• Worries; ornamental networks
• Neck lines?
• Worries (about)
• 19 things on a classical guitar
• Ridges on the neck