muni
n.— «Windsurfing somehow led to last summer’s project of learning how to ride a unicycle (to raise the cool factor, I bought a mountain unicycle, or “muni,” as it’s called).» —“Above the lawn, walking the line” by Adam Bryant AZCentral.com (Phoenix, Arizona) Sept. 9, 2006. (source: Double-Tongued Dictionary)
Further reading
After our conversation about the expression dingle day, a term used by workers at a research station in Antarctica to denote bright, sunny weather, a listener offers a possible explanation for this term. It may derive from the idea of the skies...