Maalicht is definitely not Celtic or Irish (I have also done linguistics and I can't see how this could possibly look Celtic, sorry).
A quick Google search turned up mentions of the word maalicht on half-a-dozen Dutch sites. 'Licht' is 'light' in Dutch, but I haven't been able to decipher the meaning of the whole word. Perhaps one of our Dutch posters will be able to contribute more.
♦ Chrisell ♦
All we have to decide is what to do with the time that is given us. - J.R.R. Tolkien.