The most common and most likely answer to this crossword clue is the 7 letter word EYELASH
I've seen this crossword clue in The Guardian
E
Y
E
L
A
S
H
More clues leading to the result EYELASH
- When speaking, I cut facial hair
- Facial hair I flog for audition
- Hair found in Keith’s ale? Yes, it’s returned
- Body part found by detective on beat
- Hair stood on edge during tough sale? Yes
- I, reportedly, stroke hair
- Hairy thing faced extinction initially, certainly around US city, ending in death
- Something hairy not far from the viewer
- Loose delivery, the ball always ending on wood for batter?
- Observe line has disturbed facial feature
Buddy explains!

The straight part
We know that "Hair" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hair = eyelash.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 EYELASH mean?
EYELASH noun- One of the hairs which grow along the edge of eyelids