Kali

google

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late 16th century: from colloquial Arabic qalī ‘calcined ashes of Salsola (and similar plants)’; compare with alkali.

wiktionary

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Arabic قِلْي‎ (qily). See alkali.

Uncertain; see arnis#Name at Wikipedia for more.

Uncertain; possibly a reference to the appearance of soda ash produced by burning kali (Etymology 1).

etymonline

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Kali

a name of Devi, the Hindu mother-goddess, in her black-skinned death-aspect, 1798, from Sanskrit kali, literally "the black one," fem. of kalah "blue-black, black," a word from a Dravidian language. Also taken as the fem. of kala "time" (as destroyer).