May is able to dance (6)
I believe the answer is:
cancan
'dance' is the definition.
(cancan is a kind of dance)
'may is able' is the wordplay.
'may' becomes 'can' ('can' can be a synonym of 'may').
'is able' becomes 'can' (I've seen this before).
'can'+'can'='CANCAN'
'to' is the link.
(Other definitions for cancan that I've seen before include "High-kicking French dance, once considered naughty" , "Parisian stage dance" , "Lively stage dance, doubly permissive" , "Paris music hall dance" , "High-kicking dance of repetitive kind" .)