Wordnet 3.0
NOUN (2)
1.
river in eastern Asia;
rises in North Korea and flows southwest to Korea Bay (forming part of the border between North Korea and China);
[syn: Yalu, Yalu River]
2. 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;
WordNet (r) 3.0 (2006):
Yalu River
n 1: river in eastern Asia; rises in North Korea and flows
southwest to Korea Bay (forming part of the border between
North Korea and China) [syn: Yalu, Yalu River]
2: 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