Sherpa

[Tina]

[Sherpa] originally meant the tribe in Nepal whose social custom was to provide humane and courageous mountain guides to outsiders. This tribe didnt use last names, so they were all referred to as Sherpas. To the Sherpa, all [Himalayan] peaks are sacred, so every tour holds ethical and religious meaning. [Westerners] picked up on this and use Sherpa to mean an assistant who knows more than the boss.

[Luis Fok]

A member of a Himalayan people living on the borders of Nepal and Tibet, renowned for their skill in mountaineering.

[Zipporah Schumaker]

a thick, soft artificial material used for making clothes that looks similar to sheepskin (= the skin of a sheep with wool on one side) :

[Angelast]

Sure, Id be happy to define the meaning of the word Sherpa for you.

A Sherpa is a member of an ethnic group from the high altitude regions of Nepal, Tibet, and India. Historically, Sherpas have worked as guides and porters for mountaineering expeditions in the Himalayas due to their extensive knowledge of the terrain and their expertise in high altitude trekking. In a broader sense, the term Sherpa can also refer to a guide or assistant who provides knowledge and support in a particular field or activity.