razor shell

Century Dictionary and Cyclopedia

1. n. The shell of a razor-fish; a bivalve mollusk of the genera Ensis, Solen, or Siliqua: so called from the shape of the shell, which resembles a razor. Compare razor-fish, 3.

Wiktionary

1. n. A bivalve mollusc, of genus Ensis, having a long, straight shell, that burrows in the sand.

GNU Webster's 1913

1. n. (Zoöl.) any marine bivalve shell belonging to Solen and allied genera, especially Solen ensis (or Ensatella ensis), and Solen Americana, which have a long, narrow, somewhat curved shell, resembling a razor handle in shape. Called also razor clam, razor fish, knife handle.