Related Clues:

• Bombard mollusc's casing
• Cartridge
• Woman will fire shots from large gun
• Oyster's protection
• Big name at the pumps
• Seaside souvenir
• Beach memento, sometimes
• Shell that is fired from an unlikely source!
• Conch, for example
• What Ralph uses to call a meeting in 'Lord of the Flies'
• It's blown out of the water
• Unfilled pie crust
• Case husband found in market
• Peanut's protector
• Metaphor for an introvert's demeanor