The most common and most likely answer to this crossword clue is the 7 letter word CATFLAP
C
A
T
F
L
A
P
More clues leading to the result CATFLAP
Buddy explains!
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.
Crossword Answer definitions
CATFLAP noun- Small hinged panel, usually cut into a door, with an opening just big enough for a cat to enter.