1. a small freshwater fish of the carp family, often used as bait
2. a person who is easily deceived or cheated; a dupe
Usage: informal
3. a pin or shaft on which something turns; a pivot or hinge
Usage: technical

Examples

• The angler used gudgeons as bait to catch larger fish.
• He fell for the scam like a gudgeon, losing all his savings.
• The door swung smoothly on its metal gudgeons.
• Gudgeons are common in European rivers and streams.
• Don't be a gudgeon—check the facts before believing that story.
• The engineer replaced the worn gudgeon to restore proper alignment.