a small knot in wood; lumber or timber with small knots / a small piece of 鰹節 (katsuo-bushi, “hard-dried skipjack tuna”)

the Kobushi magnolia, Magnolia kobus

fist / the shape of the hand when gripping a sword hilt / (by extension) swordsmanship, ability with a sword / the shape of the hand when gripping a bow / (by extension) bowmanship, ability with a bow

a warrior of ancient times / an old-school warrior (particularly emphasizing honor and steely resolve)

clenched fist

ken, a game played with the hands; a game of hands; in Italian, mor(r)a, a game in which two (or more) players each suddenly display a hand showing zero to five fingers and call out what they think will be the sum of all fingers shown.