1. plural of merganser; large diving ducks with serrated bills adapted for catching fish
Usage: ornithology

Examples

• The mergansers dove beneath the surface to catch small fish.
• We spotted a group of mergansers swimming near the rocky shore.
• Common mergansers are easily recognized by their distinctive crested heads.
• The lake attracts many mergansers during their spring migration.
• Mergansers use their serrated bills to grip slippery fish.
• The wildlife refuge provides excellent habitat for mergansers and other waterfowl.