roar /ˈror, ˈrɔr/
  吼,咆哮,轟鳴(vi.)吼,大聲說出,叫喊,喧鬧(vt.)呼喊,使轟鳴
  Roar v. i. [imp. & p. p. Roared p. pr. & vvb. n. Roaring.]
  1. To cry with a full, loud, continued sound. Specifically: (a) To bellow, or utter a deep, loud cry, as a lion or other beast.
     Roaring bulls he would him make to tame.   --Spenser.
  (b) To cry loudly, as in pain, distress, or anger.
  Sole on the barren sands, the suffering chief
  Roared out for anguish, and indulged his grief.   --Dryden.
     He scorned to roar under the impressions of a finite anger.   --South.
  2. To make a loud, confused sound, as winds, waves, passing vehicles, a crowd of persons when shouting together, or the like.
     The brazen throat of war had ceased to roar.   --Milton.
     How oft I crossed where carts and coaches roar.   --Gay.
  3. To be boisterous; to be disorderly.
     It was a mad, roaring time, full of extravagance.   --Bp. Burnet.
  4. To laugh out loudly and continuously; as, the hearers roared at his jokes.
  5. To make a loud noise in breathing, as horses having a certain disease. See Roaring, 2.
  Roaring boy, a roaring, noisy fellow; -- name given, at the latter end Queen Elizabeth's reign, to the riotous fellows who raised disturbances in the street. “Two roaring boys of Rome, that made all split.” --Beau. & Fl.
  Roaring forties Naut., a sailor's name for the stormy tract of ocean between 40° and 50° north latitude.
  Roar, v. t. To cry aloud; to proclaim loudly.
     This last action will roar thy infamy.   --Ford.
  Roar n. The sound of roaring. Specifically: (a) The deep, loud cry of a wild beast; as, the roar of a lion. (b) The cry of one in pain, distress, anger, or the like. (c) A loud, continuous, and confused sound; as, the roar of a cannon, of the wind, or the waves; the roar of ocean.
     Arm! arm! it is, it is the cannon's opening roar!   --Byron.
  (d) A boisterous outcry or shouting, as in mirth.
     Pit, boxes, and galleries were in a constant roar of laughter.   --Macaulay.
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  roar
       n 1: a deep prolonged loud noise [syn: boom, roaring, thunder]
       2: a very loud utterance (like the sound of an animal); "his
          bellow filled the hallway" [syn: bellow, bellowing, holla,
           holler, hollering, hollo, holloa, roaring, yowl]
       3: the sound made by a lion
       v 1: make a loud noise, as of wind, water, or vehicles; "The wind
            was howling in the trees"; "The water roared down the
            chute" [syn: howl]
       2: utter words loudly and forcefully; "`Get out of here,' he
          roared" [syn: thunder]
       3: emit long loud cries; "wail in self-pity"; "howl with
          sorrow" [syn: howl, ululate, wail, yawl]
       4: act or proceed in a riotous, turbulent, or disorderly way;
          "desperadoes from the hills regularly roared in to take
          over the town"-R.A.Billington
       5: make a loud noise, as of animal; "The bull bellowed" [syn: bellow]
       6: laugh unrestrainedly and heartily [syn: howl]