Mound

A ball or globe forming part of the regalia of an emperor or other sovereign. It is encircled with bands, enriched with precious stones, and surmounted with a cross; -- called also globe.

An artificial hill or elevation of earth; a raised bank; an embarkment thrown up for defense; a bulwark; a rampart; also, a natural elevation appearing as if thrown up artificially; a regular and isolated hill, hillock, or knoll.

To fortify or inclose with a mound.

structure consisting of an artificial heap or bank usually of earth or stones; "they built small mounds to hide behind"

a small natural hill