/ ˌprɪnsɪˈpæləti; NAmE / noun ( pl. -ies )
1.
[ C ] a country that is ruled by a prince :
the principality of Monaco
2.
the Principality [ sing. ] ( BrE ) Wales
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WORD ORIGIN
Middle English (denoting the rank of a prince): from Old French principalite , from late Latin principalitas , from Latin principalis first, original, from princeps , princip- first, chief.