Introductions having PA accepting job — good sign (11)
I believe the answer is:
prolegomena
'introductions' is the definition.
(I know this)
'pa accepting job good sign' is the wordplay.
I cannot quite understand how this works, but
'job' could be 'role' (a job is a role or position) and 'role' is present in the answer.
'good' could be 'g' (abbreviation) and 'g' is present in the answer.
'sign' could be 'omen' (omen is a kind of sign) and 'omen' is found in the answer.
'pa' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'having' acts as a link.
Can you help me to learn more?
(Other definitions for prolegomena that I've seen before include "Literary introductions" , "Introduction" .)