in athletics sense of "to botch, muff" (1862). Related: Mulled; mulling.
"sweeten, spice and heat a drink," c.1600, perhaps from Du. mol, a kind of white, sweet beer, or from Flem. molle a kind of beer. Related: Mulled; mulling.
"promontory" (in Scottish place names), late 14c., perhaps from O.N. muli "a jutting crag, projecting ridge (between two valleys)," which probably is identical with muli "snout, muzzle." The O.N. word is related to O.Fris. mula, M.Du. mule, muul, O.H.G. mula, Ger. Maul "muzzle, mouth." Alternative etymology
traces it to Gael. maol "brow of a hill or rock," also "bald," from O.Celt. *mailo-s (cf. Ir. maol, O.Ir. máel, máil, Welsh moel).