The Collaborative International Dictionary of English v.0.48:

Philistine \Phi*lis"tine\, a.
   1. Of or pertaining to the Philistines.
      [1913 Webster]

   2. Uncultured; commonplace.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Philistine \Phi*lis"tine\, n. [L. Philistinus, Heb.
   Phlishth[imac], pl. Phlishth[imac]m.]
   1. A native or an inhabitant of ancient Philistia, a coast
      region of southern Palestine.
      [1913 Webster]

   2. A bailiff. [Cant, Eng.] [Obs.] --Swift.
      [1913 Webster]

   3. A person deficient in liberal culture and refinement; one
      without appreciation of the nobler aspirations and
      sentiments of humanity; one whose scope is limited to
      selfish and material interests. [Recent] --M. Arnold.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Philistine
    adj 1: of or relating to ancient Philistia or its culture or its
           people
    2: smug and ignorant and indifferent or hostile to artistic and
       cultural values [syn: anti-intellectual, philistine]
    n 1: a person who is uninterested in intellectual pursuits [syn:
         philistine, anti-intellectual, lowbrow]
    2: a member of an Aegean people who settled ancient Philistia
       around the 12th century BC

Moby Thesaurus II by Grady Ward, 1.0:

138 Moby Thesaurus words for "Philistine":
   Babbitt, Babbittish, Gothic, Middle American, anal character,
   arriviste, barbarous, bookless, boor, bounder, bourgeois, burgher,
   cad, callous, calloused, campy, carnal, carnal-minded,
   case-hardened, churl, clown, common, commonplace,
   compulsive character, conformer, conformist, conventionalist,
   deceived, earthly, earthy, epicier, flinty, formalist,
   functionally illiterate, general, grammarless, groundling,
   guttersnipe, hard, hardened, hardhearted, heathen, high-camp,
   homely, homespun, hoodwinked, hooligan, ill-bred fellow,
   ill-educated, illiterate, impervious, indurated, insensitive,
   inured, kitschy, led astray, looby, lout, low fellow, low-camp,
   lowbrow, material, materialistic, methodologist, middle-class type,
   misinformed, misinstructed, mistaught, model child, mucker,
   mundane, nonintellectual, nouveau riche, ordinary,
   organization man, pachydermatous, pagan, parrot, parvenu, peasant,
   pedant, perfectionist, plastic person, plebeian, pop, popular,
   precisian, precisianist, profane, proof against, public, ribald,
   rough, roughneck, rowdy, rude, ruffian, secular, sheep, square,
   steeled against, steely, stony, teenybopper, temporal, terrestrial,
   thick-skinned, trimmer, unbooked, unbookish, unbooklearned,
   unbriefed, uncultivated, uncultured, unedified, uneducated,
   unerudite, unguided, uninstructed, unintellectual, unlearned,
   unlettered, unliterary, unread, unrefined, unscholarly, unschooled,
   unspiritual, unstudious, untaught, untutored, upstart, vernacular,
   vulgarian, vulgarist, worldly, yes-man, yokel



Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "philistine":
   Babbitt, Boeotian, barbarian, boeotian, boob, boor, boorish,
   boring, bourgeois, capitalist, clown, commercial, commonplace,
   crass, dull, ignoramus, lout, lowbrow, materialist, materialistic,
   middlebrow, narrow-minded, prosaic, tasteless, uncultivated,
   uncultured, uneducated, unenlightened, unlearned, unlettered,
   unread, unrefined, untutored, vulgarian, yahoo



The Devil's Dictionary (1881-1906):

PHILISTINE, n.  One whose mind is the creature of its environment,
following the fashion in thought, feeling and sentiment.  He is
sometimes learned, frequently prosperous, commonly clean and always
solemn.