climber

Short definition from Wiktionary

Noun

1. 1
   Someone or something that climbs (such as a mountain climber).
2. 2
   Someone or something that climbs (such as a mountain climber): A plant such as a vine that climbs upwards as it grows by attaching itself to some support.
3. 3
   Someone or something that climbs (such as a mountain climber): A cyclist who specializes in riding especially well on steep hills or roads.
4. 4
   Someone or something that climbs (such as a mountain climber): A person who is constantly trying to get ahead socially.
5. 5
   Someone or something that climbs (such as a mountain climber): A bird that climbs, such as a parrot or woodpecker; specifically (archaic), a bird having two toes pointing forward, and two pointing backward, formerly regarded as being from the order Scansores or Zygodactyli (now obsolete as the birds formerly in this order have been reclassified into different orders); a zygodactyl.
6. 6
   Something that is used for climbing: Any structure on a playground designed to be climbed on.
7. 7
   Something that is used for climbing: Synonym of climbing iron (“a kind of crampon attached to the shoe to aid with climbing”).

Verb

1. 1
   To ascend or mount with effort; to clamber, to climb.