Noun yalu river has 2 senses
  1. Yalu, Yalu River - river in eastern Asia; rises in North Korea and flows southwest to Korea Bay (forming part of the border between North Korea and China)
    --1 is a kind of river
    --1 is a part of
     North Korea, Democratic People's Republic of Korea, D.P.R.K., DPRK
  2. Yalu River - a battle in the Korean War (November 1950); when UN troops advanced north to the Yalu River 200,000 Chinese troops crossed the river and drove them back
    --2 is a kind of
    pitched battle
    --2 is a part of Korean War
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