Webster’s Revised Unabridged Dictionary · 1913
Yataghan
Yat′a·ghan (yăt′ȧ·găn), n. [Turk. yātāghān.] A long knife, or short saber, common among Mohammedan nations, usually having a double curve, sometimes nearly straight. [Written also ataghan, attaghan.] Chaucer.