ᴺQ. !ondomillo (ondomillu-) n. “petrol, petroleum, gasoline, gas” (Category: Oil)

ᴺQ. !ondomillo (ondomillu-), n. “petrol, petroleum, gasoline, gas” [created by Röandil] (Category: Oil)

Elements

Q. ondo	“stone (as a material), (large mass of) rock”
millo	“oil”