letter opener, paper knife, paperknife
['sturgeon', 'chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour', 'clog, geta, patten, sabot', 'sidewinder, horned rattlesnake, Crotalus cerastes', 'tiger shark, Galeocerdo cuvieri', 'spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish', 'strainer']