Related Clues:

• Plastics ingredient
• Epoxy, for one
• Copal or mastic
• Violinist's accessory
• Amber, essentially
• Shellac, for one
• Amber or copal
• Amber, originally
• Balsam, e.g.
• Amber source
• Varnish source
• Amber material
• Shellac ingredient
• Amber, for one
• Tree exudation