Kalki

For other meanings, see Kalki (disambiguation). In Hindu traditions, Kalki (Sanskrit: कल्कि; also rendered by some as Kalkin and Kalaki) is the tenth and final Maha Avatara (great incarnation) of Vishnu the Preserver, who will come to end the Kali Yuga, (The Age of Darkness and Destruction). The name Kalki is often a metaphor for "Eternity" or "Time". The origins of the name probably lie in the word Kalka which refers to "dirt", "filth" or "foulness" and hence denotes the "Destroyer of Foulness", "Destroyer of Confusion", "Destroyer of Darkness", or "The Annihilator of Ignorance". Other similar and divergent interpretations based on varying etymological derivations from the ancient Sanskrit language, including one simply meaning "White Horse", have been made.
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Noun
1. the 10th and last incarnation of Vishnu
(hypernym) avatar

(n.)
The name of Vishnu in his tenth and last avatar.
  

[Hindu] "Time". The tenth and last incarnation of Vishnu, who will come from the sky upon a white horse and wreak final destruction upon the wicked, renew creation and restore righteousness.