the common european cuttlefish.-a genus comprising the common cuttlefish and numerous similar species. see illustr. under cuttlefish.-a pigment prepared from the ink, or black secretion, of the sepia, or cuttlefish. treated with caustic potash, it has a rich brown color; and this mixed with a red forms roman sepia.  cf. india ink, under india.-of a dark brown color, with a little red in its composition; also, made of, or done in, sepia.