The most common and most likely answer to this crossword clue is the 3 letter word TUG
I've seen this crossword clue in The Guardian
T
U
G
More clues leading to the result TUG
- Custody battle ended shortly after flu got out of control
- Remove contents of round tower
- Yank’s stomach turned over
- Event in which the first over the line are the losers
- Draw stomach back
- Boat talked up - good initially
- Drag spare tyre over
- Yank backing good German
- Violent criminal shipping heroin in vessel
- Jerk in corporation retiring
Buddy explains!

The straight part
We know that "Yank" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case yank = tug.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 TUG mean?
TUG noun- A sudden powerful pull.
- A tugboat.
- A kind of vehicle used for conveying timber and heavy articles.
- A trace, or drawing strap, of a harness.
- An iron hook of a hoisting tub, to which a tackle is affixed.
- An act of masturbation.
- To pull or drag with great effort
- To pull hard repeatedly
- To tow by tugboat