GNU Collaborative International Dictionary of English

Found one definition

1.       
   Lese majesty, Leze majesty (lēzˌ măjˈĕs‑ty̆) n. [F. lese-majesté, fr. L. laesus, fem. laesa, injured (see Lesion) + majestas majesty; that is, crimen laesae majestatis.] [Written also lèse majesty.]
   1. (Law) Any crime committed against the sovereign power, or against a ruler.
   
   [1913 Webster]
   
   
   2. Any affront to the dignity of an eminent or respected person.
   
   [PJC]
   
   
   3. An attack against an institution or custom revered by the majority in a society.
   
   [PJC]