The Collaborative International Dictionary of English v.0.48:
bucketful \buck"et*ful`\, Bucketfull \Buck"et*full`\ a bucket filled with a substance, or the quantity which would fill a bucket. Syn: bucket. [PJC]WordNet (r) 3.0 (2006):
bucketful n 1: the quantity contained in a bucket [syn: bucket, bucketful]