The most common and most likely answer to this crossword clue is the 8 letter word ENCLOSED
I've seen this crossword clue in The Daily Telegraph
E
N
C
L
O
S
E
D
More clues leading to the result ENCLOSED
- Enveloped in French bosom with pretty big bra size
- Held tightly when death consumes
- Included one conclusion within another
- Conclusion within another contained
- Wrapped up two points and finished
- Bound to be stifling in the finish
- Locked in? Stop consuming calories, miss!
- Animated cels done, and wrapped up
- Limited finale includes actress Glenn
Buddy explains!

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 ENCLOSED mean?
ENCLOSED verb- To surround with a wall, fence, etc.
- To insert into a container, usually an envelope or package
- Contained; held within a container.
- Fenced in or surrounded.
- (of a division within a pipe organ surrounded by a wooden box, one or more sides of which contain slats that can be opened or closed in order to increase or decrease volume) Having closed slats.