Meaning of tumulus

tu•mu•lus

Pronunciation: (t'myu-lus, ty'-), [key]
— pl. -lus•es, -li
  1. an artificial mound, esp. over a grave; barrow.
  2. a domelike swelling or mound formed in congealed lava.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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