The most common and most likely answer to this crossword clue is the 10 letter word PROMETHEUS
I've seen this crossword clue in The Guardian
P
R
O
M
E
T
H
E
U
S
More clues leading to the result PROMETHEUS
- One out to be the supremo?
- Titan unearthed in built-up Rome? The usual!
- Up there: some endlessly stormy god
- He was bound to rock expert writer on the Guardian
- One bound for America with Philistine on board
- Bringer of fire could make me ‘super-hot’
- He was bound for opera house — he’s from America
- Creator's in favour of drug use, strangely!
- For me, America is mankind's friend
- In myth, he provided fire for me and America
Buddy explains!
The straight part
We know that "He was bound to rock" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case he was bound to rock = prometheus.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.