The Collaborative International Dictionary
Tablespoonfuls
Tablespoonful \Ta"ble*spoon`ful\, n.; pl. Tablespoonfuls. 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.
Wiktionary
tablespoonfuls
n. (plural of tablespoonful English)