Baby and kid American brought up (5)
I believe the answer is:
sugar
'baby' is the definition.
(thesaurus)
'kid american brought up' is the wordplay.
'kid' becomes 'rag' (I've seen this in other clues).
'american' becomes 'us' (abbreviation for United States).
'brought up' says the letters should be written backwards (in a down clue, letters go up).
'rag'+'us'='ragus'
'ragus' backwards is 'SUGAR'.
'and' is the link.
(Other definitions for sugar that I've seen before include "flattery" , "Basic sweetener" , "White crystalline sweetener" , "e.g. Glucose" , "rotter!" .)