1) Escape 2) Exodus 3) Exodus of the giraffes 4) Famous flight, AD 622 5) Flight 6) Flight from danger 7) Flight of Mohammed 8) Flight to a better place 9) Forced journey of 622 ad 10) Hejira 11) Journey of escape 12) Mass exodus Found on https://www.crosswordclues.com/clue/hegira
• (n.) The flight of Mohammed from Mecca, September 13, A. D. 622 (subsequently established as the first year of the Moslem era); hence, any flight or exodus regarded as like that of Mohammed. Found on http://thinkexist.com/dictionary/meaning/hegira/
He·gi'ra noun [ Written also hejira .] [ Arabic hijrah flight.] The flight of Mohammed from Mecca, September 13, A. D. 622 (subsequently established as the first year of the Moslem era); hence, any flight or exodus regarded as like that of Mohammed. » The starting point of th... Found on http://www.encyclo.co.uk/webster/H/27