a vine or climbing plant that readily grows up a support or over other plants
"The old oak tree was quickly engulfed by a lush green climber that had wrapped its way from the ground to the highest branches."
someone seeking social prominence by obsequious behavior
"The new CEO watched in disgust as the junior analyst, a notorious climber, rushed over to offer him his coffee and praise before anyone else had even spoken."
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"
an iron spike attached to the shoe to prevent slipping on ice when walking or climbing
"The old mountaineer tightened his crampons, ensuring every climber had a secure grip before they descended into the icy ravine."
One who climbs.
"The local climber carefully checked his gear before scaling the steep rock face at dawn."
To climb; to mount with effort; to clamber.
"The young climber struggled up the slippery rocks, gripping each handhold tightly as he made his way to the summit."