(slang) a straight razor; ellipsis of rasoir coupe-choux.; synonym of rasoir droit / (slang) a machete; synonym of machette / (historical, military, slang, 19th c.) a Model 1816 French Army artillery short sword, which was based on the Roman gladius. The sword was generally used for clearing brush and was ineffective as a fighting weapon, without an accompanying shield / (historical, military, slang, 19th century, by extension) swords based on the Model 1816, such as the Model 1832 U.S. Army foot artillery short sword