Actor Hines, tap dancing (8)
I believe the answer is:
thespian
'actor' is the definition.
('thespian' can be a synonym of 'actor')
'hines tap dancing' is the wordplay.
'dancing' indicates an anagram.
'hines'+'tap'='hinestap'
'hinestap' with letters rearranged gives 'THESPIAN'.
(Other definitions for thespian that I've seen before include "Theatrical performer" , "Actor; relating to drama" , "Stage-player" , "cast member" , "He paints (anag)" .)