What is "scribing iron"

Scribe \Scribe\ (skr[imac]b), v. t. [imp. & p. p. Scribed (skr[imac]bd); p. pr. & vb. n. Scribing.]

1. To write, engrave, or mark upon; to inscribe.
   --Spenser.

2. (Carp.) To cut (anything) in such a way as to fit closely to a somewhat irregular surface, as a baseboard to a floor which is out of level, a board to the curves of a molding, or the like; -- so called because the workman marks, or scribes, with the compasses the line that he afterwards cuts.

3. To score or mark with compasses or a scribing iron.

   Scribing iron, an iron-pointed instrument for scribing, or marking, casks and logs.

n. An iron-pointed instrument for scribing, or marking, casks and logs.