Rath
/rʌθ/
Definition 1 of 1
Pro Tip 1/3Historical Sites
Rath primarily refers to historical earthworks, so it's best used when discussing archaeology or history. 
The archaeology class's field trip included a visit to a rath.
Pro Tip 2/3Cultural Richness
Using 'rath' implies some knowledge of Irish and Scottish heritage, as these structures are part of their history. 
Studying the raths of Ireland gave me insight into Celtic culture.
Pro Tip 3/3Geographic Specificity
The term is specific to regions like Ireland and Scotland, and might not be understood universally. 
While in Ireland, we learned that a rath was different from the forts back home.