The Collaborative International Dictionary of English v.0.48:
Shovelful \Shov"el*ful\, n.; pl. Shovelfuls. As much as a shovel will hold; enough to fill a shovel. [1913 Webster]WordNet (r) 3.0 (2006):
shovelful n 1: the quantity a shovel can hold [syn: shovel, shovelful, spadeful]