umbrella Definition

a collapsible shade for protection against weather consisting of fabric stretched over hinged ribs radiating from a central pole; especially : a small one for carrying in the hand

something which covers or embraces a broad range of elements or factors

the bell-shaped or saucer-shaped largely gelatinous structure that forms the chief part of the body of most jellyfishes : bell:1

to protect, cover, or provide with an umbrella

a perennial sedge (Cyperus alternifolius) of Madagascar that has large terminal whorls of slender leaves and is often grown as an ornamental

any of various trees or shrubs resembling an umbrella especially in the arrangement of leaves or the shape of the crown; especially : a widely cultivated schefflera (Schefflera actinophylla synonym Brassaia actinophylla) of Australia and New Guinea having leaflets radiating from an elongate petiole