The most common and most likely answer to this crossword clue is the 6 letter word DESCRY
I've seen this crossword clue in The Daily Telegraph
D
E
S
C
R
Y
More clues leading to the result DESCRY
- Catch sight of man on call
- Discover code’s cryptic in part
- Make out first of soldiers entering to attack
- Catch sight of Swedes crying, seeing display of centre half!
- Denounce over small notice
- See some in Paris weep
- Serving no alcohol outside key spot
- See, front door key’s rusty at the edges
- Spy making some in Paris weep
Buddy explains!

The straight part
We know that "Catch sight of" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case catch sight of = descry.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 DESCRY mean?
DESCRY verb- To see.
- To discover (a distant or obscure object) by the eye; to espy; to discern or detect.
- To discover: to disclose; to reveal.