It’s a relatively rare meaning. I’ve seen it used exactly twice since I’ve been consuming content? One was in the 小さな森のオオカミさん book club, which, if I’m remembering correctly, did trip up a bunch of people. The second time was recently in an anime, I don’t even remember what it was exactly.
Tl;dr, it’s a fairly rare word, and WK is teaching kanji first and foremost, a random “fruit” meaning among the “reality” “truth” etc would just muddy the water.
I wouldn’t be surprised if it’s a shake answer btw