limbus
Abaddon
Gehenna
Hades
Naraka
Pandemonium
Sheol
Tophet
avichi
cage
coop
enclosure
forgetfulness
hell
in abeyance
infernal regions
inferno
jahannan
lower world
nether world
on the shelf
pen
penfold
perdition
pinfold
place of confinement
place of torment
pound
prison
purgatory
shades below
suspended
the abyss
the bottomless pit
the grave
the pit
treading water
underworld
fictitious place
imaginary place
mythical place
obscurity
abyss
solamente
bimbo
gumbo-limbo