lastage

CIDE DICTIONARY

lastage, n. [E. lestage ballasting, fr. lest ballast, or LL. lastagium, lestagium. See Last a load.].

A duty exacted, in some fairs or markets, for the right to carry things where one will. [1913 Webster]
A tax on wares sold by the last. Cowell. [1913 Webster]
The lading of a ship; also, ballast. Spelman. [1913 Webster]
Room for stowing goods, as in a ship. [1913 Webster]

For further exploring for "lastage" in Webster Dictionary Online