追つい白はくMeanings1nounpostscript; PSUsed at the end of a letter or message to add an afterthought. Common in personal correspondence.手て紙がみの最さい後ごに追つい白はくを書かき加くわえた。I added a postscript at the end of the letter.追つい白はく:明日あしたの集しゅう合ごう時じ間かんは10時じです。PS: Tomorrow's meeting time is 10 o'clock.