παιδί

child, but both Stavropoulos and Collins also offer (young) boy/girl.  Since the speaker is talking about her own male offspring, in English she would be most likely to refer to him as son or boy.  To use child (singular) in talking of one's own son or daughter would be strange, unless in an expression like s/he's only a child (which tends to be used mainly to excuse childish behaviour), or an only child (where the sex of the child is irrelevant, and it is the lack of brothers and sisters which is being stressed).

 my/our/the children (plural) would be more common than the singular: in many cases these will include both males and females.

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