'Tubful' definitions:

Definition of 'tubful'

From: WordNet
noun
The amount that a tub will hold; "a tub of water" [syn: tub, tubful]

Definition of 'Tubful'

From: GCIDE
  • Tubful \Tub"ful\, n.; pl. Tubfuls. As much as a tub will hold; enough to fill a tub. [1913 Webster]