The most common and most likely answer to this crossword clue is the 8 letter word WRECKAGE
I've seen this crossword clue in Independent
W
R
E
C
K
A
G
E
More clues leading to the result WRECKAGE
- A crew with keg at sea that may be afloat after accident
- Pay to keep kings outside City’s ruins
- Note king trapped in enclosure after wife remains
- Debris of party in riotous rag week
- Calculated to have suffered 50% reduction in salary for demolition job
- Debris from ship crew abandoned a long time after last of attack
- Specially arranged rag week around clubs remains
- Debris of riotous rag week round about
- Count on cut in pay meaning ruin
- Keg a crew mislaid? Sign of misfortune at sea
Buddy explains!

The straight part
We know that "remains" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case remains = wreckage.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 WRECKAGE mean?
WRECKAGE noun- Something wrecked, especially the remains or debris of something which has been severely damaged or destroyed.