Related Clues:

• See to a necktie
• Comber's woe
• Boy Scout lesson
• Boater's unit
• Clove hitch, e.g.
• Stomach discomfort
• Bow feature
• Trunk feature
• About 1.8 meters
• Windsor or sheet bend
• Sailors' unit
• Tree-trunk feature
• Tie securer
• 17-, 25-, 43- and 54-Across begin with a kind of one
• Nautical mile per hour