Proper noun

1. A member of the dominant ethnic group in Nepal, with a Himalayan diaspora
2. A member of this people recruited to serve in their own elite units in the British and Indian army

Adjective

1. referring or belonging to the Gurkha people

   The Gurkha royal house of Shah united all Nepal under its rule

2. referring or belonging to a/the Gurkha soldier/units

   In 2009, Gurkha veterans were awarded better terms in the UK