Lewis Short
sponda (noun F) :
* Lit., the frame of a bedstead, sofa, etc., Ov. M. 8, 657; Petr. 97, 4; 94, 8.
* Transf.
* A bed, couch, sofa (syn. lectus), Verg. A. 1, 698; Hor. Epod. 3, 22; Ov. F. 2, 345; Mart. 3, 91, 9; Suet. Caes. 49.
* A bier, Mart. 10, 5, 9.
Charlton T. Lewis, Charles Short, A Latin Dictionary