What is the meaning of the word "kali"?

Definitions:

A mojor goddess in Hinduism, often depicted as a fierce and powerful deity, associated with destruction, time, and death but also with rebirth and the transformation of the soul. NOUN
- The image of the goddess Kali, with her fierce expression and multiple arms, represents the destruction of evil and the cycle of life and death.
In scientific context, is a term used to refer to potassium. NOUN
- Potassium, or Kali in some languages, is crucial for maintaining proper heart function and muscle contraction.
The name of a Filipino martial art that focuses on stick fighting, knife fighting, and hand-to-hand combat. NOUN
- He has been training in Kali for years, mastering the art of stick and knife fighting.