Related Clues:

• Maple output
• Aphid's sustenance
• Amber, e.g.
• Hashish, essentially
• Pine sap
• Pine exudation
• It runs through taps
• Gullible one
• Bag on the mound
• Bow application
• Drain, in a way
• Juice in a 4-Down
• Trunk contents, perhaps
• Sticky pine stuff
• Violinist's need