A marine mollusk with a shiny, almost spherical, shell and a large foot.
- ‘She was explaining about the moon snail, which they had come across while wading.’
- ‘Atlantic moon shells are found along most of the East Coast.’
- ‘Moon snails are carnivorous sand dwellers feeding mainly on clams and other snails’
- ‘Moon shells are snail-like globular forms with a half moon shaped aperture.’