It may be helpful if you edited your question to indicate why such a lock might be inappropriate.
I locked it in October 2016 following a number of close votes and a flag suggesting the historical lock: it was off-topic by even the then-current standards as it shows no evidence of research. The historical lock indicates that the question has historical value, both because of the existing answers and to show that standards do evolve.
The lock is "closed but", as the post notice indicates. If that question were asked now (or even in 2016) it would be closed in short order because a simple dictionary search provides the answer, as the top answer demonstrates. However, leaving the question on the site allows other people who don't do research (or who rely on Google for "research") to find it and not ask it again. Given that virus is the mot du jour, that was probably the right decision.
The question was asked ten years ago and has post number 3838. We're now at over 530,000. These days, given the volume of questions on the site, the community is far less tolerant of people who do not show any evidence of research. Stack Exchange can usually help where all else has failed, or where research is particularly difficult for some reason (although it still has to be shown). Here, it's particularly easy.
Even if the question were to be left open, it would certainly be protected: there are a number of deleted "answers" on that question.
Note that pointing to a similar question which has not had this treatment as evidence that this question should not be locked is not likely to have the desired result. It's far more likely that the unlocked question you find would actually be locked or simply closed or maybe even deleted.
Hm. I realise I haven't answered the specific question! To get a lock removed, ask here on Meta.English with detailed reasons about why the lock is inappropriate. There's a standard MSE post which is relevant to that process, and another which explains the historical lock itself.
