discumbency

from The Collaborative International Dictionary of English v.0.48

Discumbency \Dis*cum"ben*cy\, n. [From L. discumbens, p. pr. of
   discumbere. See {Discubitory}.]
   The act of reclining at table according to the manner of the
   ancients at their meals. --Sir T. Browne.
   [1913 Webster]