The related word lists have not yet been updated, but that term was moved out of renshuu's dictionary, but still exists as a private, unverified term (so as to not interfere with those who added it to the list in the past).
I cannot speak to that specific word, but there were a number of (extremely rare in terms of list/study usage) terms that were originally imported into renshuu's dictionary, but were removed from the original dictionary, and so have been removed here.
