yat·a·ghan /ˈjætəˌgæn, ˈjætɪgən/
長劍
Yat·a·ghan n. A long knife, or short saber, common among Mohammedan nations, usually having a double curve, sometimes nearly straight. [Written also ataghan, attaghan.]
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yataghan
n : a long Turkish knife with a curved blade having a single
edge