noun.
As much as a table-spoon will hold; as a customary measure, half a fluid-ounce, being of about twice the capacity of a dessert-spoon, and four times that of a tea-spoon.
the GNU version of the Collaborative International Dictionary of English
noun.
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.