Source : Webster's Revised Unabridged Dictionary (1913)

Climber \Climb"er\, n.
   One who, or that which, climbs:
   (a) (Bot.) A plant that climbs.
   (b) (Zo["o]l.) A bird that climbs, as a woodpecker or a
       parrot.

Climber \Climb"er\, v. i. [From {Climb}; cf. {Clamber}.]
   To climb; to mount with effort; to clamber. [Obs.] --Tusser.

Source : WordNet®

climber
     n 1: a vine or climbing plant that readily grows up a support or
          over other plants
     2: someone seeking social prominence by obsequious behavior
        [syn: {social climber}]
     3: someone who ascends on foot; "a solitary mounter of the
        staircase" [syn: {mounter}]
     4: someone who climbs as a sport; especially someone who climbs
        mountains; "the lead climber looked strong still but his
        partner often slumped in his ropes"
     5: an iron spike attached to the shoe to prevent slipping on
        ice when walking or climbing [syn: {crampon}, {crampoon},
        {climbing iron}]