The most common and most likely answer to this crossword clue is the 7 letter word ROSETTA
R
O
S
E
T
T
A
More clues leading to the result ROSETTA
- Rashid once put in list
- Egyptian city’s stone home in highway that’s not deserted
- Flower area’s dry, turning to stone
- Stone placed in list
- The stone archaeologists treat so cryptically
- Egyptian city went down in list
- Ancient stone picked up on tail of comet reflecting indication of position in space
- Stone breaking toaster
- Somewhere of archaeological significance is place in list
- Egyptian city prepared for a test where fellow is killed
Buddy explains!

The straight part
We know that "Egyptian city" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case egyptian city = rosetta.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.