Woman who teaches may be married, I repeat (8)
I believe the answer is:
mistress
'woman who teaches' is the definition.
'married i repeat' is the wordplay.
'married' becomes 'm'.
'repeat' becomes 'stress'.
'm'+'i'+'stress'='MISTRESS'
'may be' acts as a link.
(Other definitions for mistress that I've seen before include "Woman teacher" , "she wears the trousers?" , "Schoolteacher" , "Husband's paramour" , "Female teacher" .)