The name of the object ball in bowls is "Jack", which is also a common name for boys. The object ball "Jack" is white and small in size and is used as a target for players to aim their bowls at. It is placed at the center of the rink and the objective of the game is to get your bowls as close as possible to the jack. "Jack" has become a popular name for boys due to its simple and classic sound. The name is of English origin and is often used as a shortened version of the name "John".