Meaning of radical ⼃ - WaniKani meaning not the same as what I found online


I recently started learning Japanese and yesterday I started with my Kanji
journey. I found <https://www.wanikani.com/> and started using this tool to
learn Kanji.

In the first review I learned this review I learned this radical: ⼃ and
according to WaniKani it's meaning is _slide_. Which for some reason sounded
odd to me, so I went online to find the meaning of this radical and on
[https://kanjialive.com/](https://kanjialive.com/214-traditional-kanji-
radicals/) I found this meaning: _diagonal sweeping stroke_.

Now this confuses me, because I thought that all radicals had their own
meaning that could be used as a 'word', but then why would the meaning be so
different. And I also did find nothing about _slide_ online.

But maybe it's just like a synonym.

