The Collaborative International Dictionary of English v.0.48:

Mandola \Man*do"la\, n. [It. See Mandolin.] (Mus.)
   An instrument closely resembling the mandolin, but of larger
   size and tuned lower.
   [Webster 1913 Suppl.] Mandolin

WordNet (r) 3.0 (2006):

mandola
    n 1: an early type of mandolin