The Collaborative International Dictionary of English v.0.48:

diggings \diggings\ n.
   temporary living quarters.

   Syn: digs, domiciliation, lodgings, pad.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

diggings
    n 1: an excavation for ore or precious stones or for archaeology
         [syn: diggings, digs]
    2: temporary living quarters [syn: diggings, digs,
       domiciliation, lodgings, pad]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "diggings":
   abysm, abyss, accommodations, bank, berth, chasm, coal mine,
   colliery, dig, digs, excavation, gold mine, gulf, housing,
   living quarters, lodging, lodgings, lodgment, mine, open cut,
   opencast, pit, quarry, quarters, rooms, roost, shaft, shelter,
   sleeping place, well, workings