The most common and most likely answer to this crossword clue is the 8 letter word PADDOCKS
P
A
D
D
O
C
K
S
More clues leading to the result PADDOCKS
Buddy explains!

The straight part
We know that "where Arabs may gather" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where arabs may gather = paddocks.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 PADDOCKS mean?
PADDOCKS noun- A small enclosure or field of grassland, especially for horses.
- A field of grassland of any size, especially for keeping sheep or cattle.
- An area where horses are paraded and mounted before a race and unsaddled after a race.
- Land, fenced or otherwise delimited, which is most often part of a sheep or cattle property.
- An area at circuit where the racing vehicles are parked and worked on before and between races.
- (field sports) The playing field.
- To provide with a paddock.
- To keep in, or place in, a paddock.
- A frog or toad.