Crowd sail is a nautical term used to describe an additional sail hoisted on the lower section of a ship's mast to gain more power in the wind. Other synonyms for crowd sail include "topgallant sail," "topsail," and "royal sail." These sails were vital in increasing the speed and maneuvrability of ships, especially during rough sea conditions with strong winds. The usage of these sails changed as technology evolved, and now, modern ships use more advanced tools like engines and propellers to increase their speed and safety. Nevertheless, the term "crowd sail" still holds a special place in the history of sailing and its importance in the tradition of seafaring.