The most common and most likely answer to this crossword clue is the 6 letter word BLINDS
I've seen this crossword clue in The Daily Telegraph
B
L
I
N
D
S
More clues leading to the result BLINDS
Buddy explains!

The straight part
We know that "Covers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case covers = blinds.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BLINDS mean?
BLINDS noun- A covering for a window to keep out light. The covering may be made of cloth or of narrow slats that can block light or allow it to pass.
- A destination sign mounted on a public transport vehicle displaying the route destination, number, name and/or via points, etc.
- Any device intended to conceal or hide.
- Something to mislead the eye or the understanding, or to conceal some covert deed or design; a subterfuge.
- A blindage.
- A halting place.
- The blindside.
- (1800s) No score.
- A forced bet: the small blind or the big blind.
- A player who is forced to pay such a bet.
- (as a plural) Those who are blind, taken as a group.
- To make temporarily or permanently blind.
- To curse.
- To darken; to obscure to the eye or understanding; to conceal.
- To cover with a thin coating of sand and fine gravel, for example a road newly paved, in order that the joints between the stones may be filled.