QUOTE (carsten @ June 10, 2008 03:03 pm)
.....So, how should this word be marked?

I think it should be marked as slang, with a brief explanation that it is taken from the English word bathroom.
I know the feelings on slang are clear and well documented on this forum, but if someone types Ibhavulomu on the dictionary you can give an explanation and the correct word.

Malandela, Wena owalandela izinkomo zamadoda, Luzumane, BazumeNdaba balibele, Lugagane olwahlaba amaTshali ezibunjini athi ayahamba agxamalaze, Mfolozi emnyama inkethabaweli........