The most common and most likely answer to this crossword clue is the 8 letter word ABROGATE
I've seen this crossword clue in The Daily Telegraph
A
B
R
O
G
A
T
E
More clues leading to the result ABROGATE
- Relative breaking ornamental stone in scrap
- Stop runaway boar colliding with number of spectators
- Silly old ratbag wrote at last to cancel
- Do away with a barrier, allowing brother in
- Revoke sailor’s rank holding voyage up
- Retract gear with boat at sea
- Rescind order to a barge
- End scoffed about supporter accepting own goal
- Stop sibling cutting precious stone
- To do away with a barrier, brother's breaking it
Buddy explains!

The straight part
We know that "Retract" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case retract = abrogate.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 ABROGATE mean?
ABROGATE verb- To annul by an authoritative act; to abolish by the authority of the maker or her or his successor; to repeal; — applied to the repeal of laws, decrees, ordinances, the abolition of customs, etc.
- To put an end to; to do away with.
- To block a process or function.
- Abrogated; abolished.