NOUN
- a warrant formerly issued by a French king who could warrant imprisonment or death in a signed letter under his seal
How To Use lettre de cachet In A Sentence
- He said the next day there, at dinner, that for the rest of his life he should fear nothing so much as a lettre de cachet from a French secretary of state, or a coup d '` epaule from an English one. The Letters of Horace Walpole, Earl of Orford — Volume 3