What is "jezki"

Jezki (foaled 8 March 2008) is an Irish Thoroughbred racehorse who competes in National Hunt racing. After showing promise in National Hunt Flat races he won five times as a novice hurdler in the 2012/2013 season, with his victories including the Fishery Lane Hurdle, Royal Bond Novice Hurdle, Future Champions Novice Hurdle and Evening Herald Champion Novice Hurdle. In the following season he won the WKD Hurdle and the Hatton's Grace Hurdle before taking the 2014 Champion Hurdle at Cheltenham Racecourse and following up with a win in the Racing Post Champion Hurdle. In the following season he was beaten in his first three races by Hurricane Fly and finished fourth to Faugheen in the Champion Hurdle before winning the Aintree Hurdle over two and a half miles and defeating Hurricane Fly in the World Series Hurdle.