Marmot \Mar"mot\, n. [It. marmotta, marmotto, prob. fr. L. mus montanus, or mus montis, lit., mountain mouse or rat. See {Mountain}, and {Mouse}.] 1. (Zo["o]l.) Any rodent of the genus {Arctomys}. The common European marmot ({A. marmotta}) is about the size of a rabbit, and inhabits the higher regions of the Alps and Pyrenees. The bobac is another European species. The common American species ({A. monax}) is the woodchuck.