If I understood you correctly, you propose to install the "on-line" dictionary Wikitionary in the MoodleBox and couple it to its Moodle. Right?
If Wiktionary content is available as a MediaWiki dump, I don't see a reason why this shouldn't be possible. I haven't done it myself but looked at RACHEL for example, https://moodle.org/mod/forum/discuss.php?d=353602#p1466359. It works.
My doubts are more about the effect of an on-line translator on language learning. I have observed, words looked up very quickly are also forgotten very quickly. Here's some food for thought: http://www.bbc.com/capital/story/20190220-how-can-a-distracted-generation-learn-anything.
Thanks. It's quite interesting.
Actually, I am not the "porteur de projet" (I am not a stakeholder of that MoodleBox Wiktionary embedding project).
I have also recently seen on the French forum that some universities do use a MoodleBox to give courses to "empeached" students : prisoners inside a prison, without an online connection.
(I am not taking parts to these two projects : I am just disseminating the info from the French-language Moodle forum here.)
I don't mind even if you are in the https://moodlebox.net team. The project is not going to make the developers rich: https://moodlebox.net/en/support-the-moodlebox-project/.
I have used the MoodleBox in a couple of occasions and still using it. The mobility of Raspberry Pi and the independence from the Internet the MoodleBox offers are the biggest plus for me. Talking of the mobility, I have realized that Pi 3 Model B is more portable than the more recent Model B+. My USB power pack is not powerful enough for the 3B+.