Thayer's Greek Lexicon

 1. the instrument used for engraving or carving
2. the mark stamped upon that instrument or wrought out on it
  1) a mark or figure burned in (Lev. 13:28. or stamped on, an impression
  2) the exact expression (the image) of any person or thing, marked
likeness, precise reproduction in every respect, i.e. facsimile