yataghan

n. long curved Turkish sword with a single-edged blade

The yatagan or yataghan (from Turkish yatağan ) is a type of Turkish sword (which became known in other countries as the 'Turkish sword') used from the mid-16th to late 19th centuries.The yatagan is a single-edged, one-handed sword. The blade varies from 60 to 80 cm in length and is curved forward (like the Iberian falcata, or Greek kopis), sometimes reclining backwards again towards the very end. While the back of the blade is made of softer steel, the sharp edge is made of hard, tempered steel for durability. The hilt has no guard, is typically made from bone, ivory or silver, spreading out in two wings to either side at the pommel (a feature which prevents the sword slipping out of the hand in battle). Sophisticated artwork on both the hilt and the blade can be seen on many yatagans displayed today, indicating considerable symbolic value.
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Noun
1. a long Turkish knife with a curved blade having a single edge
(hypernym) knife

(n.)
A long knife, or short saber, common among Mohammedan nations, usually having a double curve, sometimes nearly straight.
  

A long knife, common in Turkey, which has a double curved blade