Why the desperation anto_men? You could just have looked it up anywhere on the Net. Anyway, a chinaman is a wrist spin ball bowled by a left handed bowler. As for its origin, the word chinaman to describe this style of bowling is apparently traced to former West Indian spin bowler Ellis Achong, a left-arm orthodox spinner and the first Test cricketer of Chinese origin. The story goes that Achong bowled a delivery turning from off to leg and got English batsman Walter Robins stumped as a result. As he walked back, Robins apparently remarked, "Fancy being done in by a bloody Chinaman"!