Crossword Genius

Here goes Oscar with child say, heading west (8)

Ross

I believe the answer is:

geronimo

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'here' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's a link between them I don't understand?

'oscar with child say heading west' is the wordplay.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'with' means one lot of letters go next to another.
'child' becomes 'minor' (synonyms).
'say' becomes 'eg' (both can mean for example).
'heading west' is a reversal indicator.
'minor'+'eg'='minoreg'
'minoreg' reversed gives 'geronim'.
'o' put after 'geronim' is 'GERONIMO'.

'goes' is the link.

Can you help me to learn more?

(Other definitions for geronimo that I've seen before include "Cry of exhilaration" , "exhilarated cry" , "One 15 [PLAYING] 24 33 [AT SIXES AND SEVENS]" , "Brave leader" , "C19 Apache chief" .)

I've seen this clue in The Times.
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