1. the masts above the lower masts on a sailing ship
Usage: nautical; plural of topmast

Examples

• The storm damaged both topmasts on the merchant vessel.
• Sailors climbed the rigging to repair the topmasts.
• The ship’s topmasts carried the topsails and topgallant sails.
• Strong winds forced the crew to lower the topmasts for safety.
• The tall ship’s topmasts swayed gracefully in the harbor breeze.
• Maritime museums often display models showing detailed topmasts.