Web article in French about Greek (7)
I believe the answer is:
lattice
'web' is the definition.
(I've seen this before)
'article in french about greek' is the wordplay.
'article in french' becomes 'le' ('the', the definite article in French).
'about' is an insertion indicator.
'greek' becomes 'attic' (from ancient Athens or Attica).
'le' going around 'attic' is 'LATTICE'.
(Other definitions for lattice that I've seen before include "Regular atomic structure" , "grill" , "Criss-cross pattern" , "Crystal structure" , "Fretwork, grille" .)