Supporter of sailing? (4)
I believe the answer is:
mast
This could be a double definition.
'supporter' is the first definition.
(thesaurus)
'sailing?' is the second definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for mast that I've seen before include "Nautical pole" , "Long vertical pole" , "Pole on ship" , "Pole aboard; fruit for pigs" , "Spar to support a sail" .)