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The Japanese word

八つ

is pronounced
yattsu | やっつ
means
eight (traditional)
Examples:
彼女は八つだ。
kanojo wa yattsu da.
She is eight. | She's eight years old.
オレに八つ当たりするなよ。
ore ni yattsu atari suru na yo.
Don't take it out on me.
そこに八つの小石があった。
soko ni yattsu no koishi ga atta.
There were eight pebbles there.
八つ当たりするつもりはなかったのよ。
yattsu atari suru tsumori wa nakatta no yo.
I didn't mean to take it out on you.
一つ、二つ、三つ、四つ、五つ、六つ、七つ、八つ、九つ、十。
hitotsu, futatsu, mittsu, yottsu, itsutsu, muttsu, nanatsu, yattsu, kokonotsu, jū.
One, two, three, four, five, six, seven, eight, nine, ten.
Examples sourced from tatoeba.org