* Astronomy

A draco was a Roman cavalry military standard borne by a draconarius. It was the standard of the cohort as the eagle was that of the legion.
Draco took the form of a gaping wolf's head and mouth formed from cast metal, to the end of which was attached a 'body' of cloth or silk fabric in the form of a windsock.
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The draco was places on a rod and if held in the air while galloping, made a whistling sound, due to the air which entered the wolf's mouth.
The earliest evidence of the Draco in Dacia was found on 4th century BC pottery discovered in the Prahova county of Romania.