The most common and most likely answer to this crossword clue is the 6 letter word MANTLE
I've seen this crossword clue in The Daily Telegraph
M
A
N
T
L
E
More clues leading to the result MANTLE
- Claimant legally keeping cloak
- He keeps books in cloak
- Books carried by fellow in sleeveless cloak
- Sad lament for inherited status
- Stole books collected by bloke
- Insect in tree climbing for cover
- [Layer] covering chap carrying books
- Knight maybe put on half of little cloak
- Disguise bloke let out
- Covering of long hair hiding end bits of tail
Buddy explains!

The straight part
We know that "cloak" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cloak = mantle.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 MANTLE mean?
MANTLE noun- The shelf above a fireplace which may be also a structural support for the masonry of the chimney.
- A maneuver to surmount a ledge, involving pushing down on the ledge to bring up the body. Also called a mantelshelf.
- A piece of clothing somewhat like an open robe or cloak, especially that worn by Orthodox bishops. (Compare mantum.)
- A figurative garment representing authority or status, capable of affording protection.
- Anything that covers or conceals something else; a cloak.
- The body wall of a mollusc, from which the shell is secreted.
- The back of a bird together with the folded wings.
- The zone of hot gases around a flame.
- A gauzy fabric impregnated with metal nitrates, used in some kinds of gas and oil lamps and lanterns, which forms a rigid but fragile mesh of metal oxides when heated during initial use and then produces white light from the heat of the flame below it. (So called because it is hung above the lamp's flame like a mantel.)
- The outer wall and casing of a blast furnace, above the hearth.
- A penstock for a water wheel.
- The cerebral cortex.
- The layer between the Earth's core and crust.
- A mantling.
- To cover or conceal (something); to cloak; to disguise.
- To become covered or concealed.
- To spread like a mantle (especially of blood in the face and cheeks when a person flushes).