Slid out of the covers (4)
I believe the answer is:
lids
'the covers' is the definition.
(lid is a kind of cover)
'slid out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'slid' with letters rearranged gives 'LIDS'.
'of' is the link.
(Other definitions for lids that I've seen before include "Eye covers" , "Covers for opening and closing" , "Movable tops or covers" .)