saltfoot

from The Century Dictionary.

• noun A large salt-cellar formerly placed near the middle of a long table to mark the place of division between the superior and the inferior guests. See above the salt, under salt.

from the GNU version of the Collaborative International Dictionary of English.

• noun A large saltcellar formerly placed near the center of the table. The superior guests were seated above the saltfoot.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A large salt cellar formerly placed near the centre of the table, with the superior guests seated above it.