Contest is right about love! (5)
I believe the answer is:
joust
This might be a double definition.
'contest' is the first definition.
(I've seen this before)
'right about love' is the second definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'is' is the link.
Can you help me to learn more?
(Other definitions for joust that I've seen before include "Participate in tournament" , "Contest for mounted knights" , "contest on horseback" , "Medieval contest" , "Tournament with engagements between knights" .)