from The Century Dictionary.
- noun A mound of earth erected over an altar of clay on which sacrifices were burned. Altar-mounds have been discovered principally in Ohio.
Sorry, no etymologies found.
We would also refer to the fact that most of these specimens were obtained from one altar-mound.
'Lo you!' said Face-of-god, 'the man with the horn is gone up on to the altar-mound, and meseemeth he is setting the little end of the horn to his mouth.'