Related Clues:

• Pine exudation
• Bag on the mound
• Bow application
• Slimy crud
• Sticky pine stuff
• Violinist's need
• Plastic ingredient
• Plastics ingredient
• Epoxy, for one
• Copal or mastic
• Violinist's accessory
• Amber, essentially
• Shellac, for one
• Amber or copal
• Amber, originally