1. a person who birdwatches obsessively, especially one who travels long distances to see rare birds
Usage: British informal
2. a person or thing that twitches or makes jerky movements

Examples

• The dedicated twitcher drove three hours to spot the rare warbler.
• Local twitchers gathered at dawn hoping to see the migrating birds.
• He’s such a twitcher that he keeps a list of every species he’s seen.
• The nervous twitcher couldn’t sit still during the meeting.
• Her eye became a constant twitcher when she was stressed.
• The twitcher in his left hand made writing difficult.