(1) Keelak means a wedge or a clue to a mystical puzzle. The Guru gives the Keelak of the Mantra. Consequently the energy of the Mantra is manifested to the disciple. Keelak means the description, proximity, speed and method of pronunciation, the rhythm of recitation of the Mantra (Alaap), etc. Sometimes the Keelak assumes the form of a prior notice. When a sage creates a Mantra along with a precondition that "without the pronunciation of a particular word prior to the Mantra, the practice of that Mantra will not be fruitful", then the mere chanting of that Mantra does not prove to be of any avail. Such a word is termed as a Keelak (lock) of a Mantra, that is a wedge or a clue to a mystical puzzle. Only when the Mantra is chanted along with it, it proves to be fruitful. Understanding that word, and chanting along with it or destroying the relationship of that word with the Mantra is called Nishkeelan or Utkeelan (unlocking). However, only spiritually evolved persons can give guidance to this effect. One comes across "Shrimat Hanumaan Keelakam" in Shree Raam Rakshaa verse (Stotra).

(2) Movement of the Samaan vital energy (Vaayu) is essential to activate the Kundalinee (spiritual energy). Naadee Bandh (blocking the channels) is performed to achieve it. The energy used to perform Naadee Bandh is also called Keelak. Keelak means the expulsion of the Samaan vital energy from which energy is generated. Naadee Bandh also occurs if a Mantra is chanted appropriately.