oyster knife noun1 •A knife with a short, thick blade, used to pry open oysters and separate the meat from the shell.That Puddin', sir, and me, has, back to back, Withstood the fearful Rumty Tums' attack, And swum the Indian Ocean for our lives, Pursued by Oysters, armed with oyster knives. — 1918 formsoyster knives
