The Collaborative International Dictionary of English v.0.48:
fete \f[^e]te\ (f[asl]t), n. [F. See Feast.] A festival. [1913 Webster] F[^e]te champ[^e]tre[F.], a festival or entertainment in the open air; a rural festival. [1913 Webster]WordNet (r) 3.0 (2006):
fete champetre n 1: a party of people assembled for social interaction out of doors [syn: garden party, lawn party, fete champetre]