The most common and most likely answer to this crossword clue is the 4 letter word TUSH
T
U
S
H
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 TUSH mean?
TUSH noun- A tusk.
- A small tusk sometimes found on the female Indian elephant.
- The buttocks.
- Nonsense; tosh.
- To express contempt; rebuke.
- An exclamation of contempt or rebuke.
- To pull or drag a heavy object such as a tree or log.
- A half-crown coin; its value
- A crown coin; its value