mono·gram /ˈmɑnəˌgræm/
  字母組合
  Mon·o·gram n.
  1. A character or cipher composed of two or more letters interwoven or combined so as to represent a name, or a part of it (usually the initials).  Monograms are often used on seals, ornamental pins, rings, buttons, and by painters, engravers, etc., to distinguish their works.
  
  Note: ☞ The monogram above, combining the letters of the name Karolvs, was used by Charlemagne.
  2. A picture in lines; a sketch. [R.]
  3. An arbitrary sign for a word. [R.]
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  monogram
       n : a graphic symbol consisting of 2 or more letters combined
           (usually your initials); printed on stationery or
           embroidered on clothing