In which visa appears to hand over the red wine (8)
I believe the answer is:
passport
'in which visa appears' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'hand over the red wine' is the wordplay.
'hand' becomes 'pass' (synonyms).
'over' says to put letters next to each other (in a down clue, some letters go over others).
'the red wine' becomes 'port' (I've seen this in another clue).
'pass'+'port'='PASSPORT'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for passport that I've seen before include "Official document required for foreign travel" , "Travel identification" , "you might need Visa with this" , "International identification document" , "Travel ID" .)