nubecula

nūbēcula ae, f dim.

nubes, a little cloud : frontis tuae nubecula, gloomy expression .

nubecula
nūbēcŭla, ae, f. dim. [nubes], a little cloud. I Lit., Plin. 18, 35, 82, § 356.— B Transf., s...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Nubecula
·noun A slight spot on the cornea. II. Nubecula ·noun A <<Nebula>>. III. Nubecula ·noun Specifical...

Webster's Dictionary of the English Language