a predatory marine gastropod of the family Cassidae, characterized by a thick, heavy shell with a broadened outer lip.
the shell of this animal, often used for making cameos.
The Strangest Winter Olympic EventsRead more in this article about some frequently asked questions and fun facts related to our definitions.
Who Is Wednesday Named For?Surprise, surprise ... Wednesday Addams wasn't the originator of this name. So, who was?
- helm port,
- helmet liner,
- helmeted guinea fowl,
- helmholtz function,
- helmholtz, hermann ludwig ferdinand von,
Origin of helmet shell
First recorded in 1745–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019