Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
intĕrāmenta, ōrum, n. [inter], timber for the lower part and hold of a shipof-war, including the statumina and costæ: Volaterrani interamenta navium polliciti sunt, Liv. 28, 45, 15 Weissenb. (less correctly, acc. to others, incērāmenta, ōrum, n., rosin and pitch for calking a ship).