Junior medics in residence drinking milk before noon (8)

'junior medics' is the definition.
The answer and definition can be both people as well as being plural nouns.
Maybe you can see an association between them that I don't see?

'residence drinking milk before noon' is the wordplay.
'residence' becomes 'home' (home is a kind of residence).
'drinking' indicates putting letters inside (inserted letters are consumed or drunk).
'milk' becomes 'use' (both can mean to exploit).
'before' is a charade indicator (letters next to each other).
'noon' becomes 'n' (abbreviation).
'home' placed around 'use' is 'houseme'.
'houseme'+'n'='HOUSEMEN'

'in' is the link.

Can you help me to learn more?