houseguest

from WordNet (r) 3.0 (2006)

houseguest
    n 1: a guest entertained in your house [syn: {house guest},
         {houseguest}]

from The Collaborative International Dictionary of English v.0.48

houseguest \houseguest\, house guest \house guest\n.
   a guest entertained and staying overnight in one's house for
   one or more nights.
   [WordNet 1.5 +PJC]