"piedmonts" in the noun sense
1. Piedmont
the plateau between the coastal plain and the Appalachian Mountains: parts of Virginia and North and South Carolina and Georgia and Alabama
2. piedmont
a gentle slope leading from the base of a mountain to a region of flat land
3. Piedmont, Piemonte
the region of northwestern Italy includes the Po valley
Source: WordNet® (An amazing lexical database of English)
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