Most of out there may wonder what it means those who have a spiritual guru(Indian) would have heard this often.. If you wonder what it is or if you think its praising your guru or victory of your master.. Its time to think again.. An enlightened Satguru never needs your praise..
Jai means Victory
Guru means The great
Deva means the Divine who is fun-loving, playful, light and dignified
So "Jai Guru Dev" means victory of the greatness in you, victory of your mind/higher consiousness which is both playful and dignified**
Jai Guru Dev..