1. a structure built out into water to protect a harbor or influence the current or tide
2. a landing wharf or pier

1. projecting or overhanging
Usage: archaic

Examples

• The fishing boats returned to the harbor and tied up at the jetty.
• Waves crashed against the stone jetty during the storm.
• We walked to the end of the jetty to watch the sunset.
• The new jetty will protect the marina from rough seas.
• Children were crab fishing from the wooden jetty.
• The jetty extends about 200 feet into the bay.