[1] : The Collaborative International Dictionary of English v.0.48

destroyer \destroy"er\, n. cf. of. destruior.
   1. one who destroys, ruins, kills, or desolates.
      1913 webster

   2. nav. a small fast warship used primarily as an escort to
      larger vessels and typically armed with a combination of
      5-inch guns, torpedos, depth charges, and missiles;
      formerly identical to the torpedo-boat destroyer.
      webster 1913 suppl.
see also:
torpedo-boat destroyer 

[2] : WordNet (r) 2.0

destroyer
     n 1: a small fast lightly armored but heavily armed warship syn:
           guided missile destroyer
     2: a person who destroys or ruins or lays waste to; "a
        destroyer of the environment"; "jealousy was his undoer";
        "uprooters of gravestones" syn: ruiner, undoer, waster,
         uprooter
see also:
guided missile destroyer ruiner undoer waster uprooter 

[3] : Moby Thesaurus II by Grady Ward, 1.0

41 moby thesaurus words for "destroyer":
   animal, annihilator, anthropophagite, arsonist, bane, barbarian,
   battleship, battlewagon, beast, biblioclast, bomber, brute, burner,
   can, cannibal, capital ship, demolisher, despoiler, destruction,
   dynamitard, dynamiter, exterminator, hun, hyena, iconoclast,
   idol breaker, idoloclast, man-eater, nihilist, ruin, ruination,
   ruiner, savage, shark, syndicalist, terrorist, tiger, undoing,
   vandal, wild man, wrecker

[4] : Easton's 1897 Bible Dictionary

destroyer
   ex. 12:23, the agent employed in the killing of the
   first-born; the destroying angel or messenger of god. comp. 2
   kings 19:35; 2 sam. 24:15, 16; ps. 78:49; acts 12:23.
   

Destroyer >> D Words
Destroyer, definition of term: Destroyer
destroyer_pag1.html