One made principally of oyster-shells.
1873. From the depot the omnibus rolled along the shell road [at Galveston] as smoothly as if upon glass.—J. H. Beadle, ‘The Undeveloped West,’ p. 798 (Phila., &c.).
1888. To the General, the best part of all our detention was the shell drive along the ocean.—Mrs. Custer, ‘Tenting on the Plains,’ p. 273.
