nubecula
Nu*bec"u*la, n.; pl. Nubeculæ (-le). Etym: [L., dim. of nubes cloud.] 1. (Astron.) (a) A nebula. (b) pl. Defn: Specifically, the Magellanic clouds. 2. (Med.) (a) A slight spot on the cornea. (b) A cloudy object or appearance in urine. Dunglison.