Crossword Genius

Mountain chain called Eastern (5)

Ross

I believe the answer is:

range

'mountain chain' is the definition.
('range' can be a synonym of 'mountain chain')

'called eastern' is the wordplay.
'called' becomes 'rang' ('ring' can be a synonym of 'call').
'eastern' becomes 'e'.
'rang'+'e'='RANGE'

(Other definitions for range that I've seen before include "Set in a row" , "Selection" , "Walk for miles" , "Roam" , "Set < compass" .)

I've seen this clue in The Times.
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