Source : Webster's Revised Unabridged Dictionary (1913)

Ramp \Ramp\, v. i. [imp. & p. p. {Ramped} (?; 215); p. pr. & vb.
   n. {Ramping}.] [F. ramper to creep, OF., to climb; of German
   origin; cf. G. raffen to snatch, LG. & D. rapen. See {Rap} to
   snatch, and cf. Romp.]
   1. To spring; to leap; to bound; to rear; to prance; to
      become rampant; hence, to frolic; to romp.

   2. To move by leaps, or by leaps; hence, to move swiftly or
      with violence.

            Their bridles they would champ,

            And trampling the fine element would fiercely ramp.
                                                  --Spenser.

   3. To climb, as a plant; to creep up.

            With claspers and tendrils, they [plants] catch
            hold, . . . and so ramping upon trees, they mount up
            to a great height.                    --Ray.

Ramp \Ramp\, n.
   1. A leap; a spring; a hostile advance.

            The bold Ascalonite Fled from his lion ramp.
                                                  --Milton.

   2. A highwayman; a robber. [Prov. Eng.]

   3. A romping woman; a prostitute. [Obs.] --Lyly.

   4. [F. rampe.] (Arch.)
      (a) Any sloping member, other than a purely constructional
          one, such as a continuous parapet to a staircase.
      (b) A short bend, slope, or curve, where a hand rail or
          cap changes its direction.

   5. [F. rampe.] (Fort.) An inclined plane serving as a
      communication between different interior levels.

Source : WordNet®

ramp
     n 1: an inclined surface or roadway that moves traffic from one
          level to another [syn: {incline}]
     2: North American perennial having a slender bulb and whitish
        flowers [syn: {wild leek}, {Allium tricoccum}]
     3: a movable staircase that passengers use to board or leave an
        aircraft

ramp
     v 1: behave violently, as if in state of a great anger [syn: {rage},
           {storm}]
     2: furnish with a ramp; "The ramped auditorium"
     3: be rampant; "the lion is rampant in this heraldic depiction"
     4: creep up -- used especially of plants; "The roses ramped
        over the wall"
     5: stand with arms or forelegs raised, as if menacing