* It's a misspelling or a variant spelling of a different word. Could you double-check the spelling? Perhaps it's "parable" or "pabula" in a specific context.
* It's a technical term in a specialized field. If you provide more context about where you encountered the term, I may be able to help you understand it.
Please provide more information about the term "pabula" and where you came across it, and I will do my best to help.