Mike and she cut netting (4)
I believe the answer is:
mesh
'netting' is the definition.
(I've seen this before)
'mike and she cut' is the wordplay.
'mike' becomes 'm' (phonetic alphabet: alpha, bravo, charlie etc.).
'and' is a charade indicator (letters next to each other).
'cut' is an anagram indicator.
'she' anagrammed gives 'esh'.
'm'+'esh'='MESH'
(Other definitions for mesh that I've seen before include "Engage; net" , "harmonise" , "fit together" , "Get engaged" , "Netting made of wire or thread" .)