WordNet (r) 3.0 (2006):

hangout
    n 1: a frequently visited place [syn: haunt, hangout,
         resort, repair, stamping ground]

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "hangout":
   baths, casino, club, clubhouse, gambling house, gathering place,
   haunt, health resort, honky-tonk, joint, meeting place, purlieu,
   rallying point, rendezvous, resort, spa, springs, stamping ground,
   watering place