The Collaborative International Dictionary of English v.0.48:

Household \House"hold`\, a.
   Belonging to the house and family; domestic; as, household
   furniture; household affairs.
   [1913 Webster]

   Household bread, bread made in the house for common use;
      hence, bread that is not of the finest quality. [Obs.]

   Household gods (Rom. Antiq.), the gods presiding over the
      house and family; the Lares and Penates; hence, all
      objects endeared by association with home.

   Household troops, troops appointed to attend and guard the
      sovereign or his residence.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Household \House"hold`\, n.
   1. Those who dwell under the same roof and compose a family.
      [1913 Webster]

            And calls, without affecting airs,
            His household twice a day to prayers. --Swift.
      [1913 Webster]

   2. A line of ancestory; a race or house. [Obs.] --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

household
    n 1: a social unit living together; "he moved his family to
         Virginia"; "It was a good Christian household"; "I waited
         until the whole house was asleep"; "the teacher asked how
         many people made up his home" [syn: family, household,
         house, home, menage]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "household":
   Attic, accustomed, ancestral halls, average, brood, chaste,
   children, chimney corner, classic, classical, common,
   commonly known, commonplace, conventional, current, customary,
   domal, domestic, domiciliary, everyday, familiar, family,
   family homestead, fireplace, fireside, folks, foyer, garden,
   garden-variety, get, habitual, hackneyed, hearth, hearth and home,
   hearthstone, home, home place, home roof, home sweet home,
   homefolks, homely, homespun, homestead, house, ingle, inglenook,
   ingleside, issue, manorial, mansional, matter-of-fact, menage,
   nondescript, normative, notorious, offspring, ordinary, palatial,
   paternal roof, people, plain, platitudinous, popular,
   predominating, prescriptive, prevailing, prosaic, prosy,
   proverbial, public, pure, pure and simple, regular, regulation,
   residential, residentiary, roof, rooftree, simple, standard, stock,
   talked-about, talked-of, toft, trite, truistic, universal,
   universally admitted, universally recognized, usual, vernacular,
   well-kenned, well-known, well-recognized, well-understood,
   widely known, wonted, workaday, workday