‘筑堤’ is a verb meaning 'to build a dike' — a raised embankment constructed along rivers, coasts, or low-lying areas to prevent flooding or control water flow. The first character, 筑 (zhù), means 'to build' or 'to construct', often implying deliberate, labor-intensive effort; the second, 堤 (dī), specifically refers to a 'dike', 'levee', or 'embankment'. Together, they form a compound verb emphasizing purposeful infrastructure construction for flood prevention and land protection.

This term is commonly used in formal, technical, or news contexts related to water management, disaster prevention, and civil engineering. It frequently appears in government reports, weather alerts, and environmental discussions — especially during rainy seasons or after floods. While it can be used transitively (e.g., 筑堤防洪), it’s often paired with objects like 河岸 (riverbank), 海岸 (coastline), or 防洪 (flood control) to specify location or purpose.