diadem

diadem is a   Noun

Definition:

[1] Originally, an ornamental head band or fillet, worn by Eastern monarchs as a badge of royalty; hence (later), also, a crown, in general. "The regal diadem." Milton.

[2] Regal power; sovereignty; empire; -- considered as symbolized by the crown.

[3] An arch rising from the rim of a crown (rarely also of a coronet), and uniting with others over its center. Diadem lemur. (Zoöl.) See Indri. -- Diadem spider (Zoöl.), the garden spider.

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