Al Alamayn ala·la·mayn uncommon noun 1. in World War II (1942); a decisive Allied victory by British troops under Montgomery over German troops under Rommel SynonymsEl AlameinAl AlamaynBattle of El Alamein Related words Broader terms pitched battle Parts World War II WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.