An organizational unit consisting of a number of wards or congregations. The term is derived from Isaiah 33:20 which has the picture of stakes holding down a tent, which Mormons would identify as Zion, or the LDS Church. It is equivalent to a Catholic diocese.
Dictionary of Mormonese
Dictionary of "Mormonese"
Stop talking past each other. Gain a better understanding of the words that are unique to Mormonism and the differences of shared terms between Mormonism and Christianity.