
1) Battle cry
Found on
https://www.crosswordclues.com/clue/kiai

==Use in martial arts== In martial arts, the term commonly refers to a short yell made before, during, or after a technique. Students of Japanese martial arts such as aikido, karate, kobudo, kendo, or judo (or related arts such as taiko drumming) use kiai to startle an opponent, intimidate, express confidence, or express victory. In kendo, for exa...
Found on
http://en.wikipedia.org/wiki/Kiai

spirit convergence, often coinciding with a yell
Found on
http://www.encyclo.co.uk/local/21569

A shout delivered for the purpose of focusing all of one's energy into a single movement. Even when audible KIAI are absent, one should try to preserve the feeling of KIAI at certain crucial points within Karate techniques. Manifestation of KI (simultaneous union of spirit and expression of physical strength).
Found on
http://www.jkra.com/karate_glossary.htm

A kiai is a shout in kendo which must accompany a blow for a point to be scored. It has three purposes; it emphasises the point to be attacked, helps with the co-ordination and unnerves the opponent.
Found on
http://www.probertencyclopaedia.com/browse/OK.HTM

Martial shout
Found on
https://www.encyclo.co.uk/local/22115
No exact match found.