apex
A long narrow part of land that is almost all surrounded by water is called a peninsula.
The long narrow bone in the lower part of your leg is called the fibula.
The top pointed tip of the lung is the apex, while the pointed tip on the bottom of the left lung is called the lingula.
The uppermost part of the lung is the lung apex. Apical means pertaining to the apex.
Base of the lung
The snake's lung which is responsible for their breathing is called the "Vestigial lung."
This is because it is a narrow boat
This is the TOP of the lung (part toward the head).
A long narrow cut is called a slit.
A wooded ravine is called a gully.
Some small narrow boats are called canoes, others are called kayaks.
A part of a barrel is called a stave. Staves are the long, narrow strips of wood that are bound together to form the curved shape of a barrel.