the definition of ps
P.S. is an abbreviation of postscript from the Latin post scriptum meaning written after. Its common usage is after the signature in a letter (or modern times an email) to add to the letter. Postscript can be anything from a word, sentence, to many paragraphs. The P.S. is a play off of the common usage and now means read after death. The husband leaves the letters for his wife to follow to lead her on an adventure and to help her get over him.