* A slang term or regional term: It might be a term specific to a certain community, hobby, or profession.
* A misspelling: It could be a misspelling of a different term related to electronics, woodworking, or some other field.
* A fictional term: It might be a term used in a specific book, movie, or game.
To better understand what you're looking for, please provide more context. For example:
* Where did you encounter the term "bash board"?
* What was the context surrounding it?
* What do you think the term might refer to?
With more information, I can help you figure out what "bash board" might mean.