The Collaborative International Dictionary of English v.0.48:

Tablecloth \Ta"ble*cloth`\ (t[=a]"b'l kl[o^]th`; 115), n.
   A cloth for covering a table, especially one with which a
   table is covered before the dishes, etc., are set on for
   meals.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tablecloth
    n 1: a covering spread over a dining table