According to ChatGPT
"This is a combination of terms:
"Li" comes from "Libre", which in French means "free" (referring to free software).
"Chess" refers, of course, to chess.
Therefore, Lichess can be interpreted as "Free Chess," reflecting the platform's philosophy: to offer a free, open-source site for playing chess online without ads or costs."
I pronounce it Li chess. Chess.com is self explanatory. ICC= internet chess club. But what does lichess mean/stand for?