Working-class pair learn to dance (11)
I believe the answer is:
proletarian
'working-class' is the definition.
(I've seen this before)
'pair learn to dance' is the wordplay.
'dance' is an anagram indicator.
'pair'+'learn'+'to'='pairlearnto'
'pairlearnto' is an anagram of 'PROLETARIAN'.
(Other definitions for proletarian that I've seen before include "Working-class" , "Characteristic of the working class" , "Ordinary worker (Marxism)" , "Relating to the workers" .)