The most common and most likely answer to this crossword clue is the 3 plus 5 letter word LAS VEGAS
I've seen this crossword clue in Financial Times
L
A
S
V
E
G
A
S
More clues leading to the result LAS VEGAS
- Large wild agaves adjacent to sierra resort
- Somehow salvages desert city
- Salvage works outside small desert city
- Star taking young woman around city
- Fifty savages destroyed US city
- Gal saves furiously for desert resort
- Location likely to see better girl embracing star
- Star embraced by girl in entertainment centre
- Female boxing star in US city
- Girl, around age 5, popping up in Sin City
Buddy explains!
The straight part
We know that "Sin Cit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sin cit = las vegas.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.