By “English” definitions (and not in blocklist)?
Normally, I would click on a link in Anki to Goo JE, ALC, Goo Ruigo, Immersion Kit, Yourei; whatever come up enough first, and copy it to Notes field. (I also have another field for CompareWith - what I feel similar at some point, and need to be compared.)
But in WaniKani, I consider 500-character limit a hindrance, so you can’t just paste everything.