A moment to detain one good chum abroad (5)

I believe the answer is:

amigo

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'chum abroad' is the definition.
I can't tell whether this defines the answer.

'a moment to detain one good' is the wordplay.
'moment' becomes 'mo' (as in 'just a mo').
'to detain' is an insertion indicator (inserted letters are held or detained).
'one' becomes 'I' (Roman numeral).
'good' becomes 'g' (abbreviation).
'i'+'g'='ig'
'mo' going around 'ig' is 'migo'.
'a'+'migo'='AMIGO'

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(Other definitions for amigo that I've seen before include "Pal from Madrid?" , "Quixote's friend" , "Mate in Madrid?" , "Hispanic comrade" , "Friend in Spanish-speaking area" .)

I've seen this clue in The Sun.

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