(historical) A cockleshell used as a sign that one had visited the Holy Land.

Sand consisting mainly of fragments of shells, and often containing a small proportion of organic matter.

plural of shell road

(US) A road with a bed or other layer made from shells.

(geology) A layer of mollusc shells

plural of breast shell

A lightweight hollow plastic disk worn inside the brassiere to help correct flat or inverted nipples for breastfeeding.

plural of shell steak

A strip steak with the bone left in and no tenderloin attached.

A gastropod (genus Lambis) distinguished by long, channelled spines.