WordNet (r) 3.0 (2006):

Tabernacles
    n 1: a major Jewish festival beginning on the eve of the 15th of
         Tishri and commemorating the shelter of the Israelites
         during their 40 years in the wilderness [syn: Succoth,
         Sukkoth, Succos, Feast of Booths, Feast of
         Tabernacles, Tabernacles]