agger
noun
ag·ger ˈa-jər 
plural aggers
1
: a mound or construction made of soil and stones : earthwork sense 1: such as
a
: a fortification made chiefly of earth : rampart
b
: a road usually raised and with sloping drainage embankments
2
: an anatomical prominence
Word History
Etymology
Middle English, "heap of stones, earthwork," borrowed from Latin — more at exaggerate
First Known Use
14th century, in the meaning defined at sense 1
Medical Definition
agger
noun
ag·ger ˈaj-ər
: an anatomical prominence