1. a medium-sized dabbling duck with brownish-gray plumage, found in North America and Eurasia

Examples

• The gadwall is often overlooked among the more colorful ducks at the pond.
• Birdwatchers spotted a pair of gadwalls feeding in the shallow marsh.
• The male gadwall has distinctive white wing patches visible in flight.
• Gadwalls prefer freshwater wetlands with abundant vegetation.
• During migration, gadwalls can be seen in large flocks on prairie potholes.
• The gadwall’s subtle plumage makes it harder to identify than mallards.