Umbrella :: Umbrella (n.) A shade, screen, or guard, carried in the hand for sheltering the person from the rays of the sun, or from rain or snow. It is formed of silk, cotton, or other fabric, extended on strips of whalebone, steel, or other elastic material, inserted, or fastened to, a rod or stick by means of pivots or hinges, in such a way as to allow of being opened and closed with ease. See Parasol..
Umbrella :: Umbrella (n.) The umbrellalike disk, or swimming bell, of a jellyfish..
Umbrella :: Umbrella (n.) Any marine tectibranchiate gastropod of the genus Umbrella, having an umbrella-shaped shell; -- called also umbrella shell..
Umbriere :: Umbriere (n.) In ancient armor, a visor, or projection like the peak of a cap, to which a face guard was sometimes attached. This was sometimes fixed, and sometimes moved freely upon the helmet and could be raised like the beaver. Called also umber, and umbril..
Umbriferous :: Umbriferous (a.) Casting or making a shade; umbrageous.
Unincumbered :: Unincumbered (a.) Free from any temporary estate or interest, or from mortgage, or other charge or debt; as, an estate unincumbered with dower..
Unnumbered :: Unnumbered (a.) Not numbered; not counted or estimated; innumerable.
Unplumb :: Unplumb (v. t.) To deprive of lead, as of a leaden coffin..