Article about my revolutionary herb (5)
I believe the answer is:
thyme
'herb' is the definition.
(thyme is a kind of herb)
'article about my revolutionary' is the wordplay.
'article' becomes 'the' (the 'definite article' part of speech).
'about' is an insertion indicator.
'revolutionary' shows that the letters should be reversed in order.
'my' backwards is 'ym'.
'the' enclosing 'ym' is 'THYME'.
(Other definitions for thyme that I've seen before include "Culinary adjunct" , "Aromatic shrub" , "one going to pot?" , "Strong-scented herb" , "Herb used in cooking as seasoning" .)