Assertion: castle's area | /r/Synonym | sotoguruwa
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Source sentences:
text: (丸) most literally translates simply to "round" or "circle", kuruwa denotes an area enclosed by earthworks or other walls, and was a term also used to denote the enclosed maru, main baileys, which could be called kuruwa; additional areas beyond this would be called sotoguruwa (外廓), or "kuruwa that are outside".