coquina
noun
co·qui·na kō-ˈkē-nə 
1
: a soft whitish limestone formed of broken shells and corals cemented together and used for building
2
: a small wedge-shaped clam (Donax variabilis) used for broth or chowder and occurring in the intertidal zone of sandy Atlantic beaches from Delaware to the Gulf of Mexico
Example Sentences
Recent Examples on the Web Made partially out of ground coquina shells in the 1600s, this fort, which served to protect St. Augustine, still stands to this day, despite having been under the control of numerous countries during its esteemed history. 
Todd Piro, Fox News, 30 Aug. 2018 The boardwalk featured a strip of shops built of the same coquina as the band shell and exuded just the right amount of carnival atmosphere. Joy Wallace Dickinson, OrlandoSentinel.com, 13 May 2018 In the Murat House, circa 1790, a painstaking renovation uncovered original interior coquina walls. Nancy Moreland, Orlando Signature, 28 July 2017 BANDSHELL BASH June 3, 9, 10, 17, 23, 24 Daytona Beach Bandshell Concert SeriesThe historic coquina-stone amphitheater at Oceanfront Park is the venue — complete with a view of the Atlantic Ocean — for Daytona Beach’s free summer concerts. Susan Friedman, Orlando Signature, 19 May 2017 BANDSHELL BASHJune 3, 9, 10, 17, 23, 24 Daytona Beach Bandshell Concert SeriesThe historic coquina-stone amphitheater at Oceanfront Park is the venue — complete with a view of the Atlantic Ocean — for Daytona Beach’s free summer concerts. Susan Friedman, Orlando Signature, 19 May 2017
Todd Piro, Fox News, 30 Aug. 2018 The boardwalk featured a strip of shops built of the same coquina as the band shell and exuded just the right amount of carnival atmosphere. Joy Wallace Dickinson, OrlandoSentinel.com, 13 May 2018 In the Murat House, circa 1790, a painstaking renovation uncovered original interior coquina walls. Nancy Moreland, Orlando Signature, 28 July 2017 BANDSHELL BASH June 3, 9, 10, 17, 23, 24 Daytona Beach Bandshell Concert SeriesThe historic coquina-stone amphitheater at Oceanfront Park is the venue — complete with a view of the Atlantic Ocean — for Daytona Beach’s free summer concerts. Susan Friedman, Orlando Signature, 19 May 2017 BANDSHELL BASHJune 3, 9, 10, 17, 23, 24 Daytona Beach Bandshell Concert SeriesThe historic coquina-stone amphitheater at Oceanfront Park is the venue — complete with a view of the Atlantic Ocean — for Daytona Beach’s free summer concerts. Susan Friedman, Orlando Signature, 19 May 2017 Word History
Etymology
Spanish, probably diminutive of coca head, alteration of coco bogeyman, coconut
First Known Use
1837, in the meaning defined at sense 1