Ensign seen again on the quarter deck (3)
I believe the answer is:
red
'ensign' is the definition.
(thesaurus)
'again on the quarter deck' is the wordplay.
'again' becomes 're' (prefix meaning 'again').
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'the quarter deck' becomes 'd' (I can't justify this - if you can you should give a lot more credence to this answer).
're'+'d'='RED'
'seen' is the link.
Can you help me to learn more?
(Other definitions for red that I've seen before include "Colour of a cardinal's hat" , "Blushing" , "Colour of garnets" , "The colour of the former Russian army" , "Colour for danger" .)
