noun
- a large waterbird with a long pointed bill, webbed feet, and a distinctive wailing call
- a crazy or foolish person
Usage: informal
Examples
- The loon’s haunting call echoed across the lake at dawn.
- We spotted a common loon diving for fish near the shore.
- Loons are excellent swimmers but awkward on land.
- The old loon down the street talks to his garden gnomes.
- Don’t listen to that loon – he doesn’t know what he’s talking about.
- She called him a complete loon for trying to fix the roof in a thunderstorm.