Related Clues:

• Not solid
• Empty
• Like the Trojan horse
• Lacking substance
• Insincere
• Cavity
• Like jack-o'-lanterns
• Meaningless
• Like some Easter bunnies
• Like a jack-o'-lantern
• Not solid or genuine
• Empty in the middle
• Having a cavity inside
• Cavity or space in something
• Not solid, having hole in the middle