What is "bowl barrow"

n. A tumulus shaped like an inverted bowl.

Bowl Barrow is the name for a type of burial mound or tumulus. A barrow is a mound of earth used to cover a tomb. The bowl barrow gets its name from the fact that it looks like an upturned bowl. Related terms include cairn circle, cairn ring, howe, kerb cairn, tump or rotunda grave.