In Navajo, tsésǫ’ refers to mica, glass, or window. If you examine the word components closely, tsé is a reference to the rock-like quality – or the mineral. Sǫ’ means star, so it calls up the glimmering aspect of stars that are alight at night.
Put those together and you have a word that means something along the lines of rock that glimmers.
So, there’s three new words for your Friday!