Reno Stache Share definition Flag A big thick mustache often worn by a cop, similar to the cops on Reno 911. Look at that guy's Reno stache, he's either a police officer or a pedophile. Reno Stache by holymolyhorsie March 15, 2011 0 0 Get merch Get the Reno Stache mug. Buy Now — $32.95 See more merch