Crossword Genius

Gives the facts about underpants (6)

Ross

I believe the answer is:

briefs

I'm a little stuck... Click here to teach me more about this clue!

'underpants' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for briefs that I've seen before include "They are prepared for barristers' perusal" , "CLOTHING" , "Gives information and instructions (to)" , "Documents stating facts and points of law" , "Summaries of legal cases" .)

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app