Pronunciation: (sē'pē-u),[key] —n. 1. a brown pigment obtained from the inklike secretion of various cuttlefish and used with brush or pen in drawing.
2. a drawing made with this pigment.
3. a dark brown.
4. Photog.a print or photograph made in this color.
5. any of several cuttlefish of the genus Sepia, producing a dark fluid used naturally for defense and, by humans, in ink.
—adj. of a brown, grayish brown, or olive brown similar to that of sepia ink.