1] Hell is the place of the future punishment called "Gehennah" or "Gehennah of fire". This was originally the valley of Hinnom, south of Jerusalem, where the filth and dead animals of the city were cast out and burned (see maps and photos)
derivation: of Hebrew origin (01516) and (02011)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=1067&version=kjv

(01516)
1] valley, a steep valley, narrow gorge
derivation: probably from the same root as (01466) (abbreviated)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=1516&version=kjv

(01466)
1] pride, a lifting up
derivation: the same as (01465)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=1466&version=kjv

(01465)
1] the back adv
2] behind
derivation: from (01460)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=1465&version=kjv

(01460)
1] the back, back, midst
derivation: from (01342) [corresponding to (01354)]
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=1460&version=kjv

(01342)
1] to rise up, grow up, be exalted in triumph
   1.a] (Qal)
       1.a.1] to rise up
       1.a.2] to grow up
       1.a.3] to be lifted up, be raised up, be exalted
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=1342&version=kjv

(01354)
1] convex surface, back
   1.a] back (of man)
   1.b] mound (for illicit worship)
   1.c] boss (convex projection of shield)
   1.d] bulwarks, breastworks (of arguments - figuratively.)
   1.e] brow, eyebrow
   1.f] rim (of wheel)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=1354&version=kjv

(02011)
1] Hinnom = "lamentation"
   1.a] a valley (deep and narrow ravine) with steep, rocky sides located southwest of Jerusalem, separating Mount Zion to the north from the 'hill of evil counsel' and the sloping rocky plateau of the 'plain of Rephaim' to the south
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=2011&version=kjv

Additional information:
See also The Gate of Hell.
See also the comment in Jehoshaphat