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.
Source: Webster's Revised Unabridged Dictionary (1913)
Climber \Climb"er\, v. i. [From Climb; cf. Clamber.] To climb; to mount with effort; to clamber. [Obs.] --Tusser.