Spoonful :: Spoonful (n.) The quantity which a spoon contains, or is able to contain; as, a teaspoonful; a tablespoonful..
Spoonfuls :: Spooney (n.) A weak-minded or silly person; one who is foolishly fond.
Tablespoonful :: Tablespoonful (n.) As much as a tablespoon will hold; enough to fill a tablespoon. It is usually reckoned as one half of a fluid ounce, or four fluid drams..
Teaspoonful :: Teaspoonful (n.) As much as teaspoon will hold; enough to fill a teaspoon; -- usually reckoned at a fluid dram or one quarter of a tablespoonful.