PS BrE AmE ( also P.S. American English ) /ˌpiː ˈes/ noun [countable]
[ Language: Modern Latin ; Origin: postscriptum ; ⇨ ↑ postscript ]
(postscript) a note written at the end of a letter, adding more information ⇨ PPS :
She added a PS to say ‘hi’ to my brother.
Best wishes, Julie. PS Maggie sends her love.