Network held no protective clothing (4)
I believe the answer is:
grid
'network' is the definition.
(grid is a kind of network)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for grid that I've seen before include "Grating - which you are filling in" , "Line network, pattern" , "This crossword structure" , "Network of crossing parallel lines" , "Network of intersecting lines" .)