I've noticed that we can't edit definitions while studying definitions on the app. It would be nice if we could

Also, for definitions of entries that are longer, such as a sentence, the font size is way too small. There is room for bigger characters.

It took me a long time to notice it, but you can edit definitions while studying them in the app. Right above the characters near the top there is a tiny grey dot with a down arrow. Tap it and it drops down to reveal a space to edit definitions and mnemonics.

thanks for sharing the secret!