The most common and most likely answer to this crossword clue is the 4 letter word KNAP
I've seen this crossword clue in The Daily Telegraph
K
N
A
P
More clues leading to the result KNAP
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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 KNAP mean?
KNAP noun- A sharp blow or slap.
- To shape a brittle material having conchoidal fracture, usually a mineral (flint, obsidian, chert etc.), by breaking away flakes, often forming a sharp edge or point.
- To rap or strike sharply.
- To bite; to bite off; to break short.
- To make a sound of snapping.
- A protuberance; a swelling; a knob.
- The crest of a hill
- A small hill