a lot of speech or writing that has very little meaning
She was saying, 'He's great, he's so cool, blah $ blah
The politician's speech was filled with empty rhetoric and blah, leaving the audience unsatisfied.
The long legal document was full of legal jargon and blah, making it challenging to discern its key points.
The meeting seemed to go on forever, with the participants droning on about unrelated topics, creating a sense of blah in the room.
