Hypertext Webster Gateway: "agger"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Agger \Ag"ger\, n. [L., a mound, fr. aggerere to bear to a
place, heap up; ad + gerere to bear.]
An earthwork; a mound; a raised work. [Obs.] --Hearne.
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