Lewis & Short

fulcrum, i, n. [fulcio],

  1. I. the post or foot of a couch (a bed or an eating-couch), a bedpost: eburnum, Prop. 2, 13, 21 (3, 5, 5 M.); Ov. P. 3, 3, 14; Gell. 10, 15, 14: tricliniorum pedibus fulcrisque, Plin. 34, 2, 4, § 9: aurea fulcra, Verg. A. 6, 604; Suet. Claud. 32; cf. plutei, Prop. 4 (5), 8, 68.
  2. II. Transf. (pars pro toto), a couch at table, bed-lounge, Prop. 4 (5), 7, 3; Juv. 6, 22; 11, 95: plumeum, Amm. 28, 1, 47.