1) Chukker 2) Division of a polo match 3) India period of play in polo 4) Kind of boot 5) Period of play 6) Play 7) Playing period 8) Polo game division 9) Polo period 1) Chukker 
India Period of play in polo. 
There are six chukkas (periods) in high handicap matches, each lasting seven minutes plus up to 30 seconds of overtime. If, during the extra 30 seconds, the ball hits the sideboards or goes out of bounds, or if the umpire blows his whistle for a foul, the chukka is over. There is no overtime at the end of the final chukka unless the score is tied. ...
[n] - one of the six playing periods into which the game of polo is divided
chukka boot noun a shoe that comes up to the ankle and is laced through two or three pairs of eyelets; often made of suede
Semi-short footwear style with shoe top at ankle bone height