The Collaborative International Dictionary of English v.0.48:

Shoveler \Shov"el*er\, n. [Also shoveller.]
   1. One who, or that which, shovels.
      [1913 Webster]

   2. (Zool.) A river duck (Spatula clypeata), native of
      Europe and America. It has a large bill, broadest towards
      the tip. The male is handsomely variegated with green,
      blue, brown, black, and white on the body; the head and
      neck are dark green. Called also broadbill, spoonbill,
      shovelbill, and maiden duck. The Australian shoveler,
      or shovel-nosed duck (Spatula rhynchotis), is a similar
      species.
      [1913 Webster]

WordNet (r) 3.0 (2006):

shoveler
    n 1: a worker who shovels; "a shoveler of coal" [syn:
         shoveler, shoveller]
    2: freshwater duck of the northern hemisphere having a broad
       flat bill [syn: shoveler, shoveller, broadbill, Anas
       clypeata]