The most common and most likely answer to this crossword clue is the 2 letter word OX
I've seen this crossword clue in The Daily Telegraph
O
X
More clues leading to the result OX
- Fly right into blow dealt with axe
- Neat round window? Elliptical actually
- Transport that power-steers? The other way round!
- Daisy steers very well, avoiding poles
- Kind of lake unknown in old part of London
- Plant requiring a bovine point of view?
- Animal definitely spat out plant
- Box eyed to hold plant
- Academic code
- Bovine delouser unknown in old time
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 OX mean?
OX noun- An adult castrated male of cattle (B. taurus).
- Any bovine animal (genus Bos). A neat, a beef.