Acronym
- Day of week, an abbreviation often used in date formats
- Declaration of war, a formal act by which one nation goes to war against another
- Deep ocean water, a marine term
- Died of wounds, a military casualty classification
- Warhammer 40,000: Dawn of War, a strategy video game
- Doppler On Wheels, an experimental portable Doppler radar device used for meteorological research
- United States Department of War, an extinct department now part of the United States Department of Defense
- Days of Wonder, a board games company
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