The most common and most likely answer to this crossword clue is the 6 letter word OBLONG
I've seen this crossword clue in The Times
O
B
L
O
N
G
More clues leading to the result OBLONG
- Alumnus, boring perhaps, certainly not square
- Figure of old boy standing by pine?
- Passed on wish in earnest for a slim figure
- Shape of old boy, not short
- Old internet piece encapsulating Northern figure
- Old online journal assuming new shape
- Shape of old pipe containing source of lead
- Old boy stretched, in shape
- During tea, nothing was bowled at Oval
- Figure outside broadcast’s lengthy
Buddy explains!

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 OBLONG mean?
OBLONG noun- Something with an oblong shape.
- A rectangle having length greater than width or width greater than length.
- Longer than wide or wider than long; not square.
- Roughly rectangular or ellipsoidal