noun
also cup-and-saucer
Etymology: so called from the shape of the inverted shell, the inner shelf of which resembles a cup sitting on the saucer-shaped outer shell
: a mollusk of the family Calyptraeidae
noun
also cup-and-saucer
Etymology: so called from the shape of the inverted shell, the inner shelf of which resembles a cup sitting on the saucer-shaped outer shell
: a mollusk of the family Calyptraeidae
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012