3. (noun)mounter, climber someone who ascends on foot "a solitary mounter of the staircase"
4. (noun)climber 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. (noun)crampon, crampoon, climbing iron, climber an ironspike attached to the shoe to prevent slipping on ice when walking or climbing