Crossword Genius

Plane to Nepal, for instance? (7)

Ross

I believe the answer is:

anagram

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'plane' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for anagram that I've seen before include "There's confusion among characters" , "A rag man (anag)" , "One way to clue" , "Word play" , "characters on the move" .)

I've seen this clue in The Telegraph.
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