Vimana seems to mean any of several ancient flying machines

Vimana are not unique to India and there are references from all over the world and include the Egyptian Saqqara Bird, the pre-Columbian golden airplane models, the Greek Icarus legend, the Chariot of Ezekiel, the Nazca runways (lines), The Abydos carvings, The Tassili rock paintings from Algeria and the Chinese references to Lu Ban’s wooden aircraft that flew great distances. Naturally, these references are often dismissed by modern historians as simply impossible but there can be no doubt that humanity has a collective memory of have once been able to fly in ancient times.