The LDS Church uses several meanings for hell. In one sense, hell defines a temporary state of suffering referred to as spirit prison. It is a place for those who have “died in their sins, without a knowledge of the truth, or in transgression, having rejected the prophets.” (D&C 138:32) While in spirit prison, non-Mormons will receive a second chance to repent and accept the ordinances that are carried out for them in the temples. In another sense, hell can refer to the eternal regret a non-Mormon will have upon living in the lowest kingdom of glory and wishing they had been more obedient.
The word is also used for outer darkness. This is the eternal dwelling place of torment where Satan, his angels, and apostates will dwell.