Scrimshaw /(?)/

Scrim·shaw

Scrimshaw

v. t.
  1. To ornament, as shells, ivory, etc., by engraving, and (usually) rubbing pigments into the incised lines. [Sailor's cant. U.S.]

Scrimshaw

n.
  1. A shell, a whale's tooth, or the like, that is scrimshawed. [Sailor's cant, U.S.]