The Collaborative International Dictionary of English v.0.48:

Roast \Roast\, v. t. [imp. & p. p. Roasted; p. pr. & vb. n.
   Roasting.] [OE. rosten, OF. rostir, F. r[^o]tir; of German
   origin; cf. OHG. r[=o]sten, G. r["o]sten, fr. OHG. r[=o]st,
   r[=o]sta, gridiron, G. rost; cf. AS. hyrstan to roast.]
   1. To cook by exposure to radiant heat before a fire; as, to
      roast meat on a spit, or in an oven open toward the fire
      and having reflecting surfaces within; also, to cook in a
      close oven.
      [1913 Webster]

   2. To cook by surrounding with hot embers, ashes, sand, etc.;
      as, to roast a potato in ashes.
      [1913 Webster]

            In eggs boiled and roasted there is scarce
            difference to be discerned.           --BAcon.
      [1913 Webster]

   3. To dry and parch by exposure to heat; as, to roast coffee;
      to roast chestnuts, or peanuts.
      [1913 Webster]

   4. Hence, to heat to excess; to heat violently; to burn.
      "Roasted in wrath and fire." --Shak.
      [1913 Webster]

   5. (Metal.) To dissipate by heat the volatile parts of, as
      ores.
      [1913 Webster]

   6. To banter severely. [Colloq.] --Atterbury.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Roasting \Roast"ing\,
   a. & n., from Roast, v.
   [1913 Webster]

   Roasting ear, an ear of Indian corn at that stage of
      development when it is fit to be eaten roasted.

   Roasting jack, a machine for turning a spit on which meat
      is roasted.
      [1913 Webster]

WordNet (r) 3.0 (2006):

roasting
    n 1: cooking (meat) by dry heat in an oven (usually with fat
         added); "the slow roasting took several hours"

Moby Thesaurus II by Grady Ward, 1.0:

123 Moby Thesaurus words for "roasting":
   ardent, ass-reaming, baking, banter, bantering, barbecuing,
   basting, bawling-out, blistering, boiling, booing, braising,
   brewing, broil, broiling, burning, burning hot, canicular,
   catcalling, catering, chaffing, chewing, cookery, cooking, cuisine,
   culinary science, cussing-out, derision, derisive, derisory,
   domestic science, dressing, dressing-down, ebullient, feverish,
   fleering, flippancy, flippant, flushed, fooling, frying,
   going-over, grilling, grinning, hazing, heated, hissing,
   home economics, hooting, hot, hot as fire, hot as hell, jacking-up,
   jeering, jesting, joking, jollying, joshing, kidding, leering,
   levity, like a furnace, like an oven, mockery, mocking, nutrition,
   overheated, overwarm, pan-broiling, panning, parching, piping hot,
   poaching, quizzical, ragging, railing, raillery, raking-down,
   rallying, razzing, reaming, reaming-out, red-hot, ribbing,
   ridicule, ridiculing, sauteing, scalding, scoffing, scorching,
   searing, seething, setdown, shirring, simmering, sizzling hot,
   smart, smart-aleckiness, smart-alecky, smart-ass, smartness,
   smirking, smoking hot, sneering, snickering, sniggering, snorting,
   speaking-to, steeping, stewing, sudorific, sweating, sweaty,
   sweltering, sweltry, talking-to, taunting, teasing, toasting,
   torrid, twitting, what-for, white-hot