pointel

from The Century Dictionary.

• noun A point or sharp instrument; especially, such an instrument used in writing; in the middle ages, a style used with ivory tablets or for writing on a soft surface, as of wax.
• noun Any sharp-pointed thing resembling a pencil, as the pistil of a plant. Also pointed.
• noun A pavement formed of materials of a lozenge shape, or of squares set diagonally.

from the GNU version of the Collaborative International Dictionary of English.

• noun See pointal.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun computer graphics Any of the eight vertices of a voxel.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a tool used by an engraver