third battle of Ypres

Từ điển WordNet v3.1 - WordNet Dictionary

noun

battle in World War I (1917);
an Allied offensive which eventually failed because tanks bogged down in the waterlogged soil of Flanders;
Germans introduced mustard gas which interfered with the Allied artillery
• Syn:
Ypres, battle of Ypres
• Regions:
Belgium, Kingdom of Belgium, Belgique
• Instance Hypernyms:
pitched battle
• Part Holonyms:
World War I, World War 1, Great War, First World War, War to End War