The most common and most likely answer to this crossword clue is the 6 letter word BRIEFS
I've seen this crossword clue in The Guardian
B
R
I
E
F
S
More clues leading to the result BRIEFS
- Pants giving legal summaries
- Fibres woven into underwear
- Underwear barrister receives
- Cheese is fine first for those who plead
- Underwear provided for leaders in action?
- apestry of fibres, these worn
- Item put on behind silks?
- Fancy fibres for pants
- Issues instructions for underwear
- With which Rumpole represents boxers?
Buddy explains!

The straight part
We know that "Issues instructions/underwear" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case issues instructions/underwear = briefs.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 BRIEFS mean?
BRIEFS noun- A writ summoning one to answer to any action.
- An answer to any action.
- A memorandum of points of fact or of law for use in conducting a case.
- (by extension) A position of interest or advocacy.
- An attorney's legal argument in written form for submission to a court.
- (English law) The material relevant to a case, delivered by a solicitor to the barrister who tries the case.
- A short news story or report.
- (usually in the plural) undershorts briefs.
- A summary, précis or epitome; an abridgement or abstract.
- A letter patent, from proper authority, authorizing a collection or charitable contribution of money in churches, for any public or private purpose.
- (slang) A ticket of any type.
- To summarize a recent development to some person with decision-making power.
- To write a legal argument and submit it to a court.