From WordNet dictionary, version 3.0:
hell
n. 1. any place of pain and turmoil; "the hell of battle"; "the inferno of the engine room"; "when you're alone Christmas is the pits";
Synonyms: hell on earth, hellhole, snake pit, the pits, inferno
2. a cause of difficulty and suffering; "war is hell"; "go to blazes"
Synonyms: blaze
3. (Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment; "Hurl'd headlong...To bottomless perdition, there to dwell"- John Milton; "a demon from the depths of the pit"; "Hell is paved with good intentions"-Dr. Johnson
Synonyms: Hell, perdition, Inferno, infernal region, nether region, pit
4. (religion) the world of the dead; "No one goes to Hades with all his immense wealth"-Theognis
Synonyms: Hell, Hades, infernal region, netherworld, Scheol, underworld
5. violent and excited activity; "they began to fight like sin"
Synonyms: sin
6. noisy and unrestrained mischief; "raising blazes"
Synonyms: blaze