Meaning of “blog” - Learner’s Dictionary

blog

noun [ C ] us uk /blɒɡ/ also weblog

B1 a record of your thoughts that you put on the Internet for other people to read

blog verb [ I ]
blogger noun [ C ] us uk /ˈblɒɡər/

B1 a person who writes or reads a blog

(Definition of “blog” from the Cambridge Learner’s Dictionary © Cambridge University Press)