jairä = lake (noun) (some things Google found for "jaira": an uncommon term; a unusual feminine first name; a glowing eyed jaguar in online game MapleStory; Jaira's Waxing Salon in New Jersey; a rare last name; La Jaira is a place in the Rhone-Alpes region of France; name of places in India and Tanzania)
Word derivation for "lake" :
Basque = aintzira, Finnish = järvi
Miresua = jairä
Apparently, the Basque word I used previously for lake, laku, wasn't the best word for lake. Although laku is a valid Basque word for lake. My previous Miresua word for lake was jaru. I made my new word similar.
This Miresua conlang word has been changed. The word for lake is now ainäri.