There are multiple origins and translations for the name Kul:
1. Old Turkic (köle) name-giving which actually means - "slave/servant of Allah; comrade, companion, warrior, worker, assistant".
Kul - descendants of the Christians, who were recruited from the personal bodyguards of the shah.
2. Sanskrit (कुल) word semantics - "all, whole, entire; gross; ancestry; warm".
3. Turkic and interpretation is - "lake".
4. Tatar (Кул) which actually means - "hand (palm)".