Regularly aborted articles for Express (7)
I believe the answer is:
breathe
'express' is the definition.
(I've seen this before)
'regularly aborted articles' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'articles' becomes 'athe' (two examples of the part-of-speech: a+the).
The alternating letters of 'aborted' are 'bre'.
'bre'+'athe'='BREATHE'
'for' acts as a link.
(Other definitions for breathe that I've seen before include "wheeze" , "Tell" , "Whisper" , "as wine may be allowed to do" , "Do this before you go under" .)