Definitions

1. interjection

an abbreviation of ‘postscript’, used to add a supplementary or afterthought comment

“I’m leaving early, ps don’t forget to lock the door.”

2. noun

a postscript, especially in handwriting or typescript

“The writer added a ps at the end of the letter with a personal message.”

3. abbreviation

a shortened form of ‘postscript’

“The abbreviation ‘ps’ is often used in writing to indicate a postscript.”

4. verb

to add a postscript to (a letter, document, etc.)

“She decided to ps her resignation letter with a personal message.”