Crossword Genius

Sign from old people (4)

Ross

I believe the answer is:

omen

'sign' is the definition.
(I know that omen is a type of sign)

'old people' is the wordplay.
'old' becomes 'o' (abbreviation).
'people' becomes 'men' (men are people).
'o'+'men'='OMEN'

'from' acts as a link.

(Other definitions for omen that I've seen before include "Gloomy sign" , "Harbinger, portent" , "Portent of evil" , "Augur" , "Sign of a future event, good or bad" .)

I've seen this clue in The Sun.
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