Diaulos

ancient Greek athletics, a running race of 400 meters or two stades.
Found on http://www.hestories.info/greco-roman-world-glossary.html

diaulos

(from the article `Olympic Games`) ...also came to refer to the track on which the race was held and is the origin of the modern English word stadium. In 724 a two-length race, the ...
Found on http://www.britannica.com/eb/a-z/d/44

Diaulos

[architecture] Diaulos, in ancient Greek architecture, was a peristyle round the great court of the palaestra, described by Vitruvius, which measured two stadia (1,200 ft.) in length, on the south side this peristyle had two rows of columns, so that in stormy weather the rain might not be driven into the inner part. ==Sources== ...
Found on http://en.wikipedia.org/wiki/Diaulos_(architecture)

Diaulos

peristyle round the great court of the palaestra, described by Vitruvius, which measured two stadia (1,200 ft.) in length, on the south side this peristyle had two rows of columns, so that in stormy weather the rain might not be driven into the inner part. The word was also used in ancient Greece for a foot race of twice the usual length.[15]
Found on http://en.wikipedia.org/wiki/Glossary_of_architecture

diaulos

ancient Greek double flute
Found on http://phrontistery.info/d.html
No exact match found