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]

Source: The Collaborative International Dictionary of English v.0.48
 

Spoonful \Spoon"ful\, n.; pl. Spoonfuls.

1. The quantity which a spoon contains, or is able to contain; as, a teaspoonful; a tablespoonful.

2. Hence, a small quantity. --Arbuthnot.

Source: Webster's Revised Unabridged Dictionary (1913)