The word "Kundalini" origins from the word "kundal", which literally translated means: "lock of hair from the beloved". Kundalini also refers to the word "coil". If "Kundalini Energy" is awakened, it uncoils (like a lock of hair) and rises up (like a snake) from the base of the spine (thats where the Kundalini resides dormant in every human), along the central column of the spine (Sushmana) until it reaches the top of the head (crown chakra).
"Kundalini Rising" refers to uncoiling and awakening the Inner Potential (Creative Energy) in every single human being.
It is literally the true essence of your being, which is uncoiling and awakening to tap into your Highest Potential to be the person you are meant to be. Being able to live up to your Dharma (life purpose) using all the energy you are equipped with to do so with easy, joy and success.
You don't have to look out for a dramatic "Kundalini Awakening" or "Kundalini Rising" in deep trance, being beyond this world and having a deep (out of body) experience with all the bells and whistles.
Of course, it can be like that, but more often the process
of tapping into and releasing Kundalini energy is more subtle and happens over time.
Your Kundalini integrates you more fully with reality (the infinite) and gives you awareness (to notice who you truly are) so that you can act (not re-act) in correlation with the higher consciousness.