カキコ Common word LinksSentence search for カキコSentence search for かきこEdit in JMdict Noun1. post (to a BBS); comment (on a blog)Abbreviation, Slang, See also 書き込みカキコにがて苦手なんです。I'm not good at posting stuff online.Other formsかきこ Discussions Log in to talk about this word.