Brainer d(aemon). Totally cool.
I have always seen it as Brain Nerd
luu = bone
kuu = Moon
suu = mouth
muu = other
You can practically imagine the apes in the first act of the movie “2001” coming up with these words to describe their environment.
(The monolith could be a “muu muu”, the Other Other, to distinguish it from the basic “muu” of the other tribe.)
Did you mean Obtainium?
It's hard to describe how much this felt like a french word for all this time. To be honest, I even thought it was local jargon... We typically call it a "pull". Everyone does it, it's the word.