Son first to meet Virgin Queen and nun (6)
I believe the answer is:
sister
'nun' is the definition.
(a nun might be called sister)
'son first to meet virgin queen' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'first to' becomes 'ist' (I've seen this in other clues).
'meet' is a charade indicator (letters next to each other).
'virgin queen' becomes 'er' (abbreviation for Elizabeth Regina. I am not sure about the 'virgin' bit.).
's'+'ist'+'er'='SISTER'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for sister that I've seen before include "The nurse in charge" , "habits' - one who has them" , "trade union member?" , "Female sibling" , "'Nurse, nun or relative (6)'" .)