A triangular headsail rigged on a stay extending from the foremast down to the bowsprit or the bow of the vessel. The jib helps balance the boat by moving the center of effort forward, and it funnels air into the mainsail to increase overall aerodynamic efficiency. Larger vessels may fly multiple jibs, such as an inner jib and a flying jib.
Heard on the job
The wind is picking up, let's drop the genoa and hank on the working jib.