If you can search radicals in https://www.weblio.jp and results also come up in [Userscript] WaniKani JJ External Definition from Weblio (JP) and Kanjipedia. (I stopped maintaining it and don’t know if it’s still working.)
You can search a Kanji in wiktionary.org to see how traditional radicals work, though you have to click around a little to get into 康煕部首 - Wikipedia (and not a table, but rather 214 hyperlinks).