Flabellum

·noun A fan; especially, the fan carried before the pope on state occasions, made in ostrich and peacock feathers.

flabellum
flābellum, i, n. dim. [flabrum], a small fan or fly-flap. I Lit.: cape hoc flabellum, et ventulum h...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
flabellum
flabellum ī, n dim.flabra, a small fan, flyflap , T., Pr.—Fig.: seditionis, exciter . ...

An Elementary Latin Dictionary