Hi Candidate,

Vidaai refers to the Hindu word known as "Vida" which means to let someone detach from his/her loved ones and personal belongings. The word is generally used when a bride leaves her Maternal house after marriage and starts a new journey with his Groom's family. Vidaai Pradarshani is the ritual where the father and the family of the girl sends the girl with his husband for further life.

Hope that this answer helps you.