The Collaborative International Dictionary of English v.0.48:
Spoonful \Spoon"ful\ (-f[.u]l), n.; pl. Spoonfuls (-f[.u]lz). 1. The quantity which a spoon contains, or is able to contain; as, a teaspoonful; a tablespoonful. [1913 Webster] 2. Hence, a small quantity. --Arbuthnot. [1913 Webster]WordNet (r) 3.0 (2006):
spoonful n 1: as much as a spoon will hold; "he added two spoons of sugar" [syn: spoon, spoonful]