"Luffs" is a nautical term that refers to the movement of a sail as it flaps in the wind. This word is often used in boating contexts, and it is important for sailors to understand how to adjust their sails in order to avoid luffing and maintain a steady course. Some synonyms for "luffs" include flapping, fluttering, and waving. Other related terms include "reefing," which refers to adjusting the size of a sail to reduce its exposure to the wind, and "trimming," which involves adjusting the sail's angle to optimize its performance. Overall, understanding these different sailing terms is essential for safe and efficient boating.