Style of neck that goes round in a loop? (4)
I believe the answer is:
polo
'style of neck that goes round' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'a loop?' is the wordplay.
'loop' anagrams to 'POLO'.
Though, I am not clear how this is indicated.
'in' is the link.
Can you help me to learn more?
(Other definitions for polo that I've seen before include "Game on horseback or in water" , "Ball game played on horseback" , "Game (with a hole?)" , "Game played on horseback or in pool" , "It's played in water and on horseback" .)