Assertion: cockle's shell | /r/HasProperty | thick
Facets:
Source sentences:
text: The shell, which reaches 6.5 cm in length, is thick, and almost circular in outline.
text: The shell is broadly ovate, thick, and sharply pointed except when eroded.
text: The dingy white shell, which is thick and rounded and has prominent concentric lines, is found in the intertidal zone from the Gulf of St. Lawrence to the Gulf of Mexico; it is the most important food clam of the Atlantic coast.