The DICT Development Group

  marmot \mar"mot\ (m[aum]r"m[o^]t; 277), n. [It. marmotta,
     marmotto, prob. fr. L. mus montanus, or mus montis, lit.,
     mountain mouse or rat. See Mountain, and Mouse.]
     1. (Zool.) Any rodent of the genus Marmota (formerly
        Arctomys) of the subfamily Sciurinae. The common
        European marmot ({Marmota 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 ({Marmota monax) is the
        woodchuck (also called groundhog), but the name marmot
        is usually used only for the western variety.
        [1913 Webster +PJC]
  
     2. Any one of several species of ground squirrels or gophers
        of the genus Spermophilus; also, the prairie dog.
        [1913 Webster]
  
     Marmot squirrel (Zool.), a ground squirrel or spermophile.
        
  
     Prairie marmot. See Prairie dog.
        [1913 Webster]

  Bobac \Bo"bac\, n. (Zool.)
     The Poland marmot ({Arctomys bobac).
     [1913 Webster]