Noun: […]
3. One who knew a specific decedent.
“She was from a large family and had many friends, so the funeral was crowded with mourning survivors”

Via wiktionary.

Did you really just not look this up, at all? Seriously, this is an extremely common usage of the term. Why are you so defensive about this? For that matter, why do you think arguing semantics at all is relevant to the discussion at hand - beyond just making you look like you’re arguing in bad faith?