Merriam-Webster's Collegiate® Dictionary, 11th Edition
CLIMB
I. verb see: cleave Date: before 12th century intransitive verb
1. to go upward with gradual or continuous progress ; rise , ascend , to increase gradually , to slope upward ,
2. to go upward or raise oneself especially by grasping or clutching with the hands , to ascend in growth (as by twining), to go about or down usually by grasping or holding with the hands , to get into or out of clothing usually with some haste or effort , transitive verb to go upward on or along, to the top of, or over , to draw or pull oneself up, over, or to the top of by using hands and feet , to grow up or over , climbable adjective
II. noun
Date: circa 1587
a place where climbing is necessary to progress, the act or an instance of climbing ; rise , ascent