The most common and most likely answer to this crossword clue is the 4 letter word COSH
I've seen this crossword clue in The Daily Telegraph
C
O
S
H
More clues leading to the result COSH
- Hard to support senior officer's weapon
- Mathematical function is hit
- Attack pacifist leading appeal for peace
- Companion’s carrying very large truncheon
- Club’s hyperbolic function
- Greek island with hot club
- Found in Mexico, sharp weapon
- Billygetting very uplifted in church
- Companion concealing rather large lead-pipe?
- Hit hard, society suffering setback
Buddy explains!
The straight part
We know that "Sap" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sap = cosh.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 COSH mean?
COSH noun- A weapon made of leather-covered metal similar to a blackjack.
- A blunt instrument such as a bludgeon or truncheon.
- The cane.
- To strike with a weapon of this kind.
- Cosy; snug