어도

Etymology 1
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Noun

 * 1) fishway, fish ladder
 * 1) fishway, fish ladder

Etymology 2
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Noun

 * 1)  road reserved for the sovereign (in historical East Asia)
 * 2)  the lower paved road in historical East Asian royal mausoleums, as opposed to.

Etymology 3
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Noun

 * 1)  royal sword (in historical East Asia)