razor grinder

plural razor grinders

1. A large brown cicada, Henicopsaltria eydouxii, of eastern Australia.

plural razor grinders

1. A professional who sharpens and shapes razor blades and other metal tools using grinding and polishing machines to achieve a fine edge or surface finish; now largely replaced by automated machinery, it was historically known for being physically demanding and dangerous, with high mortality rates due to equipment failure and health issues like grinder's asthma.