Cattle confused about front of iron grid (7)
I believe the answer is:
lattice
'grid' is the definition.
(thesaurus)
'cattle confused about front of iron' is the wordplay.
'confused' is an anagram indicator.
'about' indicates putting letters inside.
'front of' suggests taking the first letters.
The initial letter of 'iron' is 'i'.
'cattle' with letters rearranged gives 'lattce'.
'lattce' going around 'i' is 'LATTICE'.
(Other definitions for lattice that I've seen before include "Regular arrangement" , "type of tracery" , "Ornamental framework" , "Criss-cross pattern" , "Trellis: maybe" .)