The Collaborative International Dictionary of English v.0.48:

Carton \Car"ton\ (k[aum]r"t[o^]n), n. [F. See Cartoon.]
   Pasteboard for paper boxes; also, a pasteboard box.
   [1913 Webster]

   Carton pierre, a species of papier-mach['e], imitating
      stone or bronze sculpture. --Knight.
      [1913 Webster]

WordNet (r) 3.0 (2006):

carton
    n 1: the quantity contained in a carton [syn: carton,
         cartonful]
    2: a box made of cardboard; opens by flaps on top

Moby Thesaurus II by Grady Ward, 1.0:

83 Moby Thesaurus words for "carton":
   ammunition box, ark, attache case, bag, bandolier, barrel, basket,
   billfold, bin, boot, bottle, box, box up, briefcase, bunker,
   caisson, can, canister, capsula, capsule, cardcase, case, cask,
   casket, cedar chest, chest, cigarette case, cist, coffer, coffin,
   compact, cone, crate, crib, dispatch box, encase, encyst, envelope,
   etui, file, file folder, filing box, folio, hamper, holster,
   hope chest, housewife, hussy, hutch, jar, kit, letter file,
   monstrance, ostensorium, pack, package, packet, packing case,
   parcel, pillbox, pod, portfolio, pot, powder box, quiver, rack,
   reliquary, sack, sarcophagus, scabbard, sheath, skippet, snuffbox,
   socket, spectacle case, tank, tea chest, till, tin, tinderbox,
   vanity case, vasculum, wallet