The most common and most likely answer to this crossword clue is the 9 letter word ALDEBARAN
I've seen this crossword clue in The Times
A
L
D
E
B
A
R
A
N
More clues leading to the result ALDEBARAN
- A computer network block is in binary
- Rock band with a real star
- Ball player from 1966 about to block star
- Academy has large study featuring rising tribal star
- Star graduate boards a modified lander
- Star playing in a real band
- Banal read edited for Star
- Partridge stuffed with breadnuts for one of our brightest stars
- Megastar Arkin eating fresh bread
Buddy explains!
The straight part
We know that "binary" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case binary = aldebaran.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.