nullah

A ravine or gully, especially in southern Asia.

In the East Indies, a watercourse: commonly used for the dry bed of a stream.

A water course, esp. a dry one; a gully; a gorge; — orig. an East Indian term.

A stream.

The dry bed of a small stream.

A gorge or ravine.

A concrete lined channel designed to allow rapid run off of storm water from high ground, to prevent flooding of urbanised coastal areas.

a ravine or gully in southern Asia