A "bypass" refers to a method or pathway that allows something to go around an obstacle or a blockage. In medical terms, it often describes a surgical procedure where blood flow is redirected around a blocked artery, such as in a coronary artery bypass graft (CABG) surgery. This helps restore proper blood circulation to the heart. In engineering and transportation, a bypass can refer to a road or route that allows vehicles to avoid congested areas, such as a city center. This helps reduce traffic congestion and improves travel efficiency, making it easier for drivers to reach their destinations without delays.