The most common and most likely answer to this crossword clue is the 9 letter word MACINTOSH
I've seen this crossword clue in The Sunday Telegraph
M
A
C
I
N
T
O
S
H
More clues leading to the result MACINTOSH
- Computer brand once grubbily associated with blue movie patron?
- Bull chases after Scotsman wearing raincoat
- First of the invading Mohicans changing into outer wear
- Drunk is no match for computer
- Sheer nonsense about Charlie protecting you from rain
- Stomach upset about hot computer brand
- Scotsman liking son’s hot computer
Buddy explains!

The straight part
We know that "computer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case computer = macintosh.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 MACINTOSH mean?
MACINTOSH noun- A raincoat.