Related Clues:

• Lemony, e.g.
• In a sour mood
• Like a sloe
• Breakfast pastry
• Amino attachment
• Type of test
• Dessert tray pick
• Corrosive stuff
• Etcher's fluid
• Like a sourball
• Filled treat
• It was dropped in the '60s
• Vitriolic
• Needing sweetening
• Tangy