1. a stretch of water with little or no current; still water in a river or stream
Usage: nautical; often used in plural
2. the region of disturbed water behind a moving ship or boat
Usage: nautical; technical

Examples

• The canoe drifted slowly through the deadwater near the riverbank.
• Fishermen prefer casting in deadwater where fish tend to gather.
• The ship's deadwater created a visible trail behind it.
• We paddled out of the current into a deadwater cove.
• The deadwaters of the swamp were thick with vegetation.