Umbra

um′bra, n. a shadow: ( astron. ) the dark cone projected from a planet or satellite on the side opposite to the sun: an uninvited guest whom an invited one brings with him: one of the Umbridæ , the mud-minnows: a sciænoid fish, the umbrine.— adjs. Um′bral , pertaining to an umbra; Um′brāted ( her. ), shadowed; ( obs. ) Umbrat′ic , -al , Um′bratile , shadowy, secluded.— ns. Umbrā′tion , adumbration; Um′brere , Um′briere ( Spens. ), the visor of a helmet.— adj. Umbrif′erous , casting a shade. [L.]