The most common and most likely answer to this crossword clue is the 3 plus 3 letter word TEE OFF
I've seen this crossword clue in Financial Times
T
E
E
O
F
F
More clues leading to the result TEE OFF
- Start round very strongly after letter of support?
- Get a round going? Drink not available, we hear
- Start a hole to convert tee-shirts into shirts
- Upper-class chap snorting drugs to get things going
- Drive enemy back into grass
- Drive opponent over into grass
- Well-to-do type receives tips for elite start
- Take first drive to see what’s before you, as we say, on holiday
- Start driving on a course
- Start letter poorly
Buddy explains!

The straight part
We know that "Start a hole" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case start a hole = tee off.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.