bight

A bight is a bend or curve in something that's shaped like a U. It can also refer to a bay with steep sides.

When we talk about geography, a bight is often used to describe a curved shape in the land or sea. For example, you might hear someone say "The coastline has several bights" which means there are many bends and curves where the water meets the shore. This can also happen when talking about rivers, as in, "The river flows through a long bight before it reaches the ocean".