What does it mean when a bowl is described as jack high?

When a bowl is described as "jack high," it signifies that the nearest point of the bowl aligns horizontally with the height of the jack. This means the bowl is neither directly in front of nor behind the jack but instead at the same height level. This position can be significant in the game because a bowl that is jack high is often in a strategic location; it is neither too close nor too far away from the target, allowing players to play next shots in consideration of both the bowl's and jack's positions.

In the context of other choices, the description of the bowl being directly behind the jack, being closer to the mat than the jack, or striking the jack itself do not accurately convey the meaning conveyed in the term "jack high." Each of these other positions would represent different strategic scenarios on the green, but only the alignment at the same height constitutes the jack high description.