Scrabble word OTD: ALNOUZ

Someone just played this against me today. 

ZONULA a small zone

I hadn't seen it before, which I knows may sound kind of silly, but considering there's also 

ZONULE

ZONULES

ZONULAE

ZONULAR

ZONULAS

You'd think I'd have run across it by now. (Interestingly, ALNOUZ?? yields no 8s)