chiton, coat-of-mail shell, sea cradle, polyplacophore
['rock crab, Cancer irroratus', 'letter opener, paper knife, paperknife', 'coho, cohoe, coho salmon, blue jack, silver salmon, Oncorhynchus kisutch', 'promontory, headland, head, foreland', 'nail', 'rhinoceros beetle', 'seashore, coast, seacoast, sea-coast']