Where Marco Polo went abroad in a yacht (6)
I believe the answer is:
cathay
'where marco polo went abroad' is the definition.
The definition suggests a singular noun which matches the answer.
'a yacht' is the wordplay.
'a yacht' anagrams to 'CATHAY'.
Though, I am not clear how the anagram is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for cathay that I've seen before include "Name for China in medieval Europe" , "China long ago" , "poetic land" , "Literary name for China" , "Old name for China with a feline to start" .)