Tee-hee. Hamish Macdouall just used the word “nacreous” in his Googlies & Grass Stains blog on Stuff. I venture it is the first time that word has appeared on Stuff ever, and that it wouldn’t have sneaked past a Dom-Post sub if it was going in the dead-tree edition. It’s rare that anyone these days uses a word with which I am unfamiliar but this was one I had to check. And the first definition offered by Google (via Merriam-Webster) is spectacularly unhelpful:
: possessing the qualities of, consisting of, or abounding in nacre ;
Well, yes, obviously.