One of the four
target areas in
kendo, a
small,
reinforced flap of
leather covering the throat. In order to
score, one must
thrust the tip of the shinai at one's
opponent's
throat, in a
crisp strike.
Tsuki is a very difficult strike to make, both because of the small size of the target, and the difficulty of thrusting a shinai. Due to this, along with the danger of missing (can you say "crushed larynx" boys and girls?), it is discouraged for kendokai that haven't made shodan in rank.