The most common and most likely answer to this crossword clue is the 8 letter word PEIGNOIR
P
E
I
G
N
O
I
R
More clues leading to the result PEIGNOIR
- After gym, I got into slight brief nightwear
- I’ll enter to fasten Nancy’s black gown
- Hook holding one black French dressing gown
- Negligée half-open, lingerie uncovered, possibly
- Night-time habit regularly peeping into diary
- Gown I rip, gone for recycling
- Clumsily, I grope in dressing gown
- I grope in dishevelled bathrobe
- I get into fix with black French negligee
Buddy explains!

The straight part
We know that "dressing gown" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dressing gown = peignoir.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 PEIGNOIR mean?
PEIGNOIR noun- A long outer garment for women, usually sheer and made of chiffon and often sold with matching nightgown, negligee or underwear
- A cape worn to protect the clothes at the barbers / hairdressers