Related Clues:

• Sour fruit
• Tom Collins ingredient
• 7-Up ingredient
• See 90-Across
• Key pie ingredient?
• Kind of drop
• Bucket of bolts
• Sour citrus
• Aptly named citrus fruit
• Slot machine symbol
• Ade flavor
• Drink garnish
• Fruit with a wrinkled rind
• Lemon's relative
• Not a pretty fruit?