Ask HN: Finding an old visual dictionary project with minimal vocab

There was a project, maybe posted here a few years ago, which showed a dictionary where you could click any of the words used in the definition and eventually it goes to a base set of words with pictures. The idea is that the dictionary is self-contained for language learners. Could have had some other languages as well.

One of its features was that the dictionary had no circular dependencies too.

Have tried searching here and Reddit for an hour, hasn't come up.