Attention-seeking expression in article by the Edge (4)
I believe the answer is:
ahem
'attention-seeking expression' is the definition.
(sound made to seek someone's attention)
'article by the edge' is the wordplay.
'article' becomes 'a' (the indefinite article in English).
'by' says to put letters next to each other.
'the edge' becomes 'hem' (I've seen this before).
'a'+'hem'='AHEM'
'in' is the link.
(Other definitions for ahem that I've seen before include "Attention-grabbing expression" , "Half-cough to draw attention" , "It attracts attention" , "Sound made when clearing throat" , "that's said to attract attention" .)