ma·nes or Ma·nes 
(mānēz′, mänās′)
(mānēz′, mänās′)pl.n.
1. The spirits of the dead, regarded as minor supernatural powers in ancient Roman religion.
2. (used with a sing. verb) The revered spirit of one who has died.
[Middle English, from Latin mānēs, perhaps from mānis, good; see mā-1 in the Appendix of Indo-European roots.]