We have extended the agreement we had with Elhuyar Fundazioa (T183781) in order to upload most common lexemes into Wikidata, with all their declensions, meanings and, if possible, translations into Spanish, French and English.
The words will come from Elhuyar's Students' Dictionary (https://www.elhuyar.eus/eu/shop/284) and will need to be linked to their online concept via an External Authority property.
This uploading will happen in 2019 June, and will be done via bot. Maybe this bot can be also used to upload other languages words, for example Occitan (suggestion by @Auregann).
After uploading them, we could think of future uses of this lexemes, for example a Javascript popup when you select a word, that gives you the definition on Wikidata.