WordNet (r) 3.0 (2006):

Goliath
    n 1: (Old Testament) a giant Philistine warrior who was slain by
         David with a slingshot
    2: someone or something that is abnormally large and powerful
       [syn: giant, goliath, behemoth, monster, colossus]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "Goliath":
   Antaeus, Atlas, Briareus, Brobdingnagian, Charles Atlas, Cyclops,
   Gargantua, Hercules, Orion, Polyphemus, Samson, Superman, Tarzan,
   Titan, bully, bullyboy, colossus, giant, gorilla, muscle man,
   powerhouse, stalwart, strong man, strong-arm man, the mighty,
   the strong, tough, tough guy, tower of strength



Easton's 1897 Bible Dictionary:

Goliath
   great. (1.) A famous giant of Gath, who for forty days openly
   defied the armies of Israel, but was at length slain by David
   with a stone from a sling (1 Sam. 17:4). He was probably
   descended from the Rephaim who found refuge among the
   Philistines after they were dispersed by the Ammonites (Deut.
   2:20, 21). His height was "six cubits and a span," which, taking
   the cubit at 21 inches, is equal to 10 1/2 feet. David cut off
   his head (1 Sam. 17:51) and brought it to Jerusalem, while he
   hung the armour which he took from him in his tent. His sword
   was preserved at Nob as a religious trophy (21:9). David's
   victory over Goliath was the turning point in his life. He came
   into public notice now as the deliverer of Israel and the chief
   among Saul's men of war (18:5), and the devoted friend of
   Jonathan.

     (2.) In 2 Sam. 21:19 there is another giant of the same name
   mentioned as slain by Elhanan. The staff of his apear "was like
   a weaver's beam." The Authorized Version interpolates the words
   "the brother of" from 1 Chr. 20:5, where this giant is called
   Lahmi.


Hitchcock's Bible Names Dictionary (late 1800's):

Goliath, passage; revolution; heap