abbreviation PS [noun] [C] - a short remark or message added to the bottom of a letter after you have signed your name, usually introduced by the abbreviation PSThere was the usual romantic postscript at the end of his letter - PS I love you.Any written or spoken addition to something already finished can be called a postscript.As a postscript to that story I told you last week, it turned out that the woman was his sister-in-law.
POSTSCRIPT
Meaning of POSTSCRIPT in English
Cambridge English vocab. Кембриджский английский словарь. 2012