From WordNet (r) 2.0 (August 2003) [wn]:
restaurant
n : a building where people go to eat [syn: eating house,
eating place]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Restaurant \Res"tau*rant\ (r?s"t?*r?nt;277), n. [F., fr.
restaurer. See Restore.]
An eating house.
[1913 Webster]