The most common and most likely answer to this crossword clue is the 5 letter word KENDO
K
E
N
D
O
More clues leading to the result KENDO
- Theologian leaves funny guy for Japanese discipline
- Fencing put out around boundary
- Japanese art’s purpose? Slashing a winning blow
- Agreed about coating tip for fencing in Asia
- Japanese fighting finish in knockout
- Japanese art, complete with fine raised frame
- Fighting with sticks to finish in knockout
- Ritual sword play to culminate in final strike
- Oriental bamboo fencing
- Armed combat has to finish in decisive blow
Buddy explains!

The straight part
We know that "Samurai skill" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case samurai skill = kendo.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 KENDO mean?
KENDO noun- A Japanese martial art using "swords" of split bamboo.