Bit of theatre'll entertain this woman (5)
I believe the answer is:
ellen
'woman' is the definition.
'bit of theatre'll entertain this' is the wordplay.
'bit of' indicates a hidden word.
'ELLEN' is hidden within 'theatrell entertain this'.
(Other definitions for ellen that I've seen before include "Dame - - Macarthur (naut.)" , "Woman" , "the Lady of the Lake" , "- Terry, Eng. actress" , "English actress, ____ Terry (1847-1928)" .)