nubecula

‖n.; pl. Nubeculae [ L., dim. of nubes cloud. ] 1. (Astron.) (a) A nebula. (b) pl. Specifically, the Magellanic clouds. [ 1913 Webster ]

2. (Med.) (a) A slight spot on the cornea. (b) A cloudy object or appearance in urine. Dunglison. [ 1913 Webster ]