Quick terminology check: what would you say is closest to the correct definition of "hallucination" when talking about LLMs?

Follow-up question: does "there are three Bs in blueberry" count as a hallucination? (I expect these poll numbers will be much closer to each other)

@MolloyLaurence I think I may just retire my personal use of the term though - turns out it's yet another of those things where different people have different mental models of what it means (see "agents") such that it's not a particulate useful shorthand for productive conversations