Source : Webster's Revised Unabridged Dictionary (1913)

Hump \Hump\, v. t.
   1. To form into a hump; to make hump-shaped; to hunch; --
      often with up.

            The cattle were very uncomfortable, standing humped
            up in the bushes.                     --T. Roosvelt.

   2. To put or carry on the (humped) back; to shoulder; hence,
      to carry, in general. [Slang, Australia]

            Having collected a sufficient quantity, we humped it
            out of the bush.                      --C. L. Money.

   3. To bend or gather together for strenuous effort, as in
      running; to do or effect by such effort; to exert; --
      usually reflexively or with it; as, you must hump
      yourself. [Slang, U. S.]

            A half dozen other negroes, some limping and all
            scared, were humping it across a meadow. --McClure's
                                                  Mag.

Hump \Hump\, n. [Cf. D. homp a lump, LG. hump heap, hill, stump,
   possibly akin to E. heap. Cf. {Hunch}.]
   1. A protuberance; especially, the protuberance formed by a
      crooked back.

   2. (Zo["o]l.) A fleshy protuberance on the back of an animal,
      as a camel or whale.

Source : WordNet®

hump
     n : something that bulges out or is protuberant or projects from
         a form [syn: {bulge}, {bump}, {gibbosity}, {gibbousness},
          {jut}, {prominence}, {protuberance}, {protrusion}, {extrusion},
          {excrescence}]

hump
     v 1: arch one's back [syn: {hunch}, {hunch forward}, {hunch over}]
     2: have sexual intercourse with; "This student sleeps with
        everyone in her dorm"; "Adam knew Eve"; "Were you ever
        intimate with this man?" [syn: {roll in the hay}, {love},
        {make out}, {make love}, {sleep with}, {get laid}, {have
        sex}, {know}, {do it}, {be intimate}, {have intercourse},
        {have it away}, {have it off}, {screw}, {fuck}, {jazz}, {eff},
         {lie with}, {bed}, {have a go at it}, {bang}, {get it on},
         {bonk}]