Crossword Genius

Good initial main point (4)

Ross

I believe the answer is:

gist

'main point' is the definition.
(thesaurus)

'good initial' is the wordplay.
'good' becomes 'g' (abbreviation).
'initial' becomes 'ist' (ist resembles 1st).
'g'+'ist'='GIST'

(Other definitions for gist that I've seen before include "Drift" , "General meaning or main point" , "Essential point or meaning of, say, the matter" , "Pith, essence" , "Main point of the matter" .)

I've seen this clue in The Telegraph.
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