A tiara (from Latin: tiara, from Greek: τιάρα, itself from Old Persian: tiyārā) is a form of crown. There are two possible types of crown that this word can refer to. Traditionally, the word "tiara" refers to a high crown, often with the shape of a cylinder narrowed at its top, made of fabric or leather, and richly ornamented. It was used by the kings and emperors of some ancient peoples in Mesopotamia. The Assyrians used to include a pair of bull horns as a decoration and symbol of authority and a circle of short feathers surrounding the tiara's top. The Persian tiara was more similar to a truncated cone, without the horns and feathers but more jewels, and a conic-shaped tip at its top
According to Xenophon, the royal tiara was encircled with a diadem, and was high and erect, while those of the people were flexible, or had rims turned over
It was at first a round, high cap, but was afterward encompassed with a crown, subsequently with a second, and finally with a third
> A head ornament worn by woman during formal occasions, typically gemset in the front
A tiara is a metal band shaped like half a circle and decorated with jewels which a woman of very high social rank wears on her head at formal social occasions; also used of similar ornaments that girls or women wear on their heads. a piece of jewellery like a small crown, that a woman sometimes wears on very formal or important occasions (from )