Shouted Romeo and Oscar a wine (6)
I believe the answer is:
roared
'shouted' is the definition.
(roaring is a kind of shouting)
'romeo and oscar a wine' is the wordplay.
'romeo' becomes 'r' (phonetic alphabet: alpha, bravo, charlie etc.).
'and' means one lot of letters go next to another.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'wine' becomes 'red wine' (red is a type of wine).
'r'+'o'+'a'+'red'='ROARED'
(Other definitions for roared that I've seen before include "Yelled" , "Bellowed, thundered" , "Made long loud sound like lion" .)